Anker 737 GaN Charger Review: The Only Charger You Need

Quick price comparison before we start. Because if you're anything like me, the first question is always "kitna ka hai?"

Now, Rs 7,999 for a charger. I know. I physically winced when I added it to my cart on Amazon India. My wife asked if it was gold-plated. My father told me he bought a voltage stabilizer for the whole house for less money. And honestly? Both of them had a point. Eight thousand rupees is an absurd amount of money for something that charges your phone.

Except the Anker 737 doesn't just charge your phone. It charges your phone, your laptop, and your tablet at the same time, from a single wall outlet, using a brick smaller than your laptop's existing charger. That changes the math entirely. Over the four months I've been using it across eight work trips, the Anker 737 has replaced four separate chargers, freed up a significant chunk of bag space, and eliminated the single most common source of travel stress in my life: forgetting a charger in a hotel room. Let me explain how.

The Problem This Charger Solves

Count the chargers in your bag right now. Seriously, go look.

If you're a working professional who travels, you probably carry: a laptop charger (the chunky proprietary brick or a USB-C charger if you're lucky), a phone charger, possibly a tablet charger, and maybe a separate charger for your earbuds or smartwatch. That's three to four chargers, three to four cables, taking up space and weight in your bag, requiring three to four outlets or a power strip at every hotel, and creating three to four opportunities to leave something behind.

I left my MacBook charger in a Bangalore hotel room last year. Discovered this at Delhi airport. Bought a replacement at the airport electronics store for Rs 2,500. I've also left phone chargers behind twice, and once forgot a cable at a coworking space in Pune. Each incident is a small annoyance individually. Collectively, over a year of monthly travel, they add up to a genuine operational headache.

The Anker 737 collapses this entire mess into one device. One brick. Three cables. One plug point. Everything charges. Done.

What GaN Actually Means (And Why You Should Care)

GaN stands for Gallium Nitride. It's a semiconductor material that's replacing the silicon in traditional chargers. The practical difference: GaN transistors conduct electricity more efficiently, waste less energy as heat, and can be physically smaller. This means a 140W GaN charger can be physically smaller than a traditional silicon-based 65W charger.

The Anker 737 measures roughly 78mm x 80mm x 38mm and weighs 240 grams. My old Apple 67W MacBook charger — which outputs less than half the wattage — is physically larger and weighs 200 grams. So the Anker puts out more than double the power in a smaller package, and the weight penalty is only 40 grams. That's the GaN advantage in concrete terms: more power, smaller size, slightly more weight but not enough to notice.

Is GaN new or experimental? No. Gallium Nitride has been used in LEDs and military radar systems for decades. Its application in consumer chargers started around 2018-2019, and by now there are hundreds of GaN chargers from dozens of brands on the market. The technology is mature and well-understood. You're not being a guinea pig by buying a GaN charger in 2026.

The Three Ports: How Power Gets Shared

The Anker 737 has three ports:

• USB-C Port 1: Up to 140W when used alone. Supports PD 3.1 with Extended Power Range. This is for your laptop.
• USB-C Port 2: Up to 100W when used alone. This is your secondary high-power port.
• USB-A Port: Up to 18W. This is for your earbuds, smartwatch, or any device that still uses the older USB-A connector.

When you plug in multiple devices, the total 140W gets redistributed dynamically using Anker's PowerIQ 4.0 system. It's not a dumb division — the charger detects what each device needs and allocates power intelligently. Here's how it looks in practice:

One device (MacBook Air on Port 1): Full 140W available, though the MacBook Air only draws about 67W max. The extra headroom doesn't help here — the laptop's internal charging limit is the bottleneck, not the charger.

Two devices (MacBook Air + iPhone): Port 1 delivers about 100W (more than enough for the MacBook), Port 2 delivers about 27W to the iPhone (its maximum charging speed). Both charge at their full speed. No compromise.

Three devices (MacBook Air + iPhone + iPad): Port 1 drops to about 78W for the MacBook (still fast enough — the laptop barely notices), Port 2 gives 27W to the iPhone, and USB-A gives 18W to the iPad. Everyone gets enough. The MacBook charges maybe 10-15 minutes slower than it would on its own. The phone and tablet charge at full speed.

The power redistribution happens automatically. Plug in your devices in whatever order, and within a few seconds, the charger figures out the optimal allocation. I've never had to manually manage which port gets which device, though putting your laptop on Port 1 is ideal since that port has the highest single-device output.

Actual Charging Speed Tests: Indian Conditions

I ran these tests in my Gurgaon apartment at ambient room temperatures of 28-32 degrees Celsius, which is typical for Indian indoor conditions with a fan but no AC. I used the cables that came with each device unless noted otherwise. All tests started with battery levels between 10-15%.

Test 1: MacBook Air M2 (Alone on Port 1)

12% to 50%: 32 minutes. 12% to 80%: 58 minutes. 12% to 100%: 1 hour 38 minutes.

For context, the original Apple 67W charger does the same charge in about 1 hour 45 minutes. The Anker is marginally faster because it delivers a steady 67-70W (the MacBook Air's max acceptance rate), while the Apple charger sometimes negotiates at slightly lower wattage. The difference is about 7 minutes total. Not dramatic, but the Anker matches or slightly beats the official charger — that's the important takeaway. You're not sacrificing speed.

Test 2: iPhone 15 Pro (Alone on Port 1)

11% to 50%: 28 minutes. 11% to 80%: 55 minutes. 11% to 100%: 1 hour 42 minutes.

iPhones max out at about 27W charging regardless of charger capability. The Anker delivers this comfortably. Any charger above 30W will give you identical iPhone charging speeds. The Anker is massive overkill for charging only an iPhone, but that's not its purpose.

Test 3: Samsung Galaxy S24 Ultra (Alone on Port 1)

I borrowed my colleague's S24 Ultra for this test. 14% to 50%: 24 minutes. 14% to 80%: 48 minutes. 14% to 100%: 1 hour 18 minutes.

The S24 Ultra charges at up to 45W via PD, and the Anker delivers this correctly. Notably, Samsung's own 45W charger costs Rs 2,499 and is single-port. The Anker costs Rs 5,500 more but gives you two more ports and 95W more total power. If you own a Samsung phone and a laptop, the Anker makes the Samsung charger redundant.

Test 4: The Real Test — Three Devices Simultaneously

MacBook Air M2 (Port 1, starting at 12%), iPhone 15 Pro (Port 2, starting at 18%), and iPad Air M2 (USB-A port via USB-A to USB-C cable, starting at 22%).

After 30 minutes:

• MacBook Air: 12% to 39% (gained 27%)
• iPhone: 18% to 52% (gained 34%)
• iPad: 22% to 38% (gained 16% — slower because USB-A caps at 18W)

After 60 minutes:

• MacBook Air: 12% to 63%
• iPhone: 18% to 86%
• iPad: 22% to 54%

After 90 minutes:

• MacBook Air: 12% to 81%
• iPhone: 18% to 100% (finished at about the 78-minute mark)
• iPad: 22% to 68%

After the iPhone finished and I unplugged it, the charger redistributed power — the MacBook Air and iPad both sped up noticeably. Total time to charge all three devices from near-dead to full: approximately 2 hours 30 minutes. One charger, one wall outlet, three cables.

Previously, charging these three devices required three separate chargers, three wall outlets (or a power strip), and if I was doing them sequentially because hotel rooms have limited outlets, roughly 4-5 hours total. The Anker cuts that time nearly in half while using one-third of the outlets. Simple math. Big difference.

Comparing the Competition: Is the Anker Worth the Premium?

Let's be real — Rs 7,999 for a charger feels excessive when most people spend Rs 500-1,500. So let me break down what you get and don't get from the cheaper alternatives.

Samsung 65W Super Fast Charger (Rs 3,499)

Single USB-C port. Excellent for charging one Samsung phone or a light laptop. But that's it — one device at a time. If you only own a Samsung phone and never need to charge anything else simultaneously, this is perfectly fine and saves you Rs 4,500. But if you travel with a phone and a laptop, you need two chargers. The Samsung plus a laptop charger already costs more than the Anker, takes up more space, and uses two outlets.

OnePlus SUPERVOOC 100W Charger (Rs 2,499)

Blazingly fast for OnePlus phones — 0 to 100% on a OnePlus 13 in about 30 minutes, which is genuinely impressive. But the 100W speed is proprietary. Plug in a non-OnePlus device, and it charges at standard PD speed, which is much slower. Single USB-A port. Can't charge a laptop at all. This is a one-trick pony — and a very good one if you own a OnePlus phone, but utterly useless as a universal charger.

Portronics 67W GaN Charger (Rs 1,799)

On paper, this looks like a bargain. Two ports (USB-C + USB-A), 67W total, GaN technology, at Rs 1,799. I actually bought one of these before the Anker. It charged my phone just fine. It charged my iPad just fine. It could not consistently charge my MacBook Air without issues — the laptop would intermittently disconnect and reconnect, making the charging chime sound every few minutes. After a week, I gave up trying to use it for the laptop.

I also noticed it ran significantly hotter than the Anker. During a two-device charge (phone + tablet), the Portronics surface hit roughly 58-60 degrees Celsius in a non-AC room. That's warm enough to be uncomfortable to pick up. The Anker in the same test scenario topped out at about 48-50 degrees. The Portronics isn't dangerous — it has overcurrent and overtemperature protection — but the heat difference suggests less efficient power conversion, which means more wasted electricity and more stress on components over time.

For Rs 1,799, it's an acceptable phone charger. It's not a reliable laptop charger, and that's the critical distinction.

Ambrane 100W GaN Charger (Rs 2,999)

Better than the Portronics. Three ports, 100W total, and it actually charged my MacBook Air without the disconnection issues. But it doesn't support PD 3.1 Extended Power Range, which caps USB-C power delivery at 100W instead of 140W. For current devices this rarely matters — most laptops accept 65-100W. But PD 3.1 is the future standard, and if your next laptop or device supports 140W charging, the Ambrane won't be able to deliver it. The Anker is future-proofed; the Ambrane isn't.

The Ambrane also ran warmer than the Anker (about 54 degrees in the three-device test vs the Anker's 52 degrees) and doesn't have the same power redistribution intelligence — when I unplugged one device, the other ports didn't ramp up as quickly. Minor quibbles, but noticeable.

Heat, Safety, and Indian Conditions

Let me address the question directly because I hear it every time I recommend a GaN charger: "Bhai, itna chhota hai, itna power de raha hai — overheating nahi hoga?"

Yes, GaN chargers get warm during use. The Anker 737 reaches approximately 48-52 degrees Celsius surface temperature during a three-device charging session in a 28-30 degree room. That's warm to the touch — like a cup of chai that's been sitting for ten minutes — but not painful or dangerous.

For comparison:

• Apple's 67W MacBook charger: 45-48 degrees Celsius under full load
• Anker 737 (single device): 40-44 degrees Celsius
• Anker 737 (three devices): 48-52 degrees Celsius
• Portronics 67W (two devices): 58-60 degrees Celsius

Now, here's the India-specific concern. If you live in a place where ambient temperatures hit 40-45 degrees Celsius in summer — Delhi, Rajasthan, most of North India in May-June — the charger's operating temperature adds on top of ambient temperature. I tested the Anker in a non-AC room at 35 degrees ambient during a three-device charge. Surface temperature reached 58 degrees. Still within the charger's operating specifications (most electronic components are rated to 80-100 degrees internally), but warm enough that I wouldn't want to touch it casually.

Practical advice: charge in a ventilated spot. Don't shove the charger behind a cushion on your bed or bury it under papers on your desk while it's pushing 120+ watts across three ports. Give it airflow. A nightstand, desk surface, or even the floor with some open space around it is fine. This is common sense for any high-wattage charger, not specific to the Anker or GaN.

Electrical Safety Certifications

The Anker 737 sold in India is BIS certified (Bureau of Indian Standards), which is mandatory for electronic devices in the Indian market. It has built-in protections for overcurrent, overvoltage, overtemperature, and short-circuit situations. The Indian plug version uses a standard three-pin plug that fits securely in Indian wall sockets without wobbling.

One genuinely useful safety feature: if the charger detects a potentially unsafe condition — say, a damaged cable or a device drawing anomalous current — it cuts power to that port immediately rather than continuing to push current. I accidentally used a frayed USB-C cable once (the outer insulation was slightly torn), and the charger's LED blinked and the port shut down. Swapped the cable, and it resumed charging. That kind of active protection is what separates a Rs 7,999 charger from a Rs 1,799 one.

Life With One Charger: The Behavioral Change

Four months in, and the biggest surprise isn't the charging speed or the build quality — it's how much my daily routine simplified.

At home: The Anker lives on my desk. MacBook charges from Port 1 while I work. Phone gets topped up from Port 2 when it drops below 30%. AirPods Pro charge from USB-A overnight. One charger, one wall socket, three devices handled. My old setup — a laptop charger on one outlet, a phone charger on another, earbuds charger on a third — used a power strip with four outlets. Now I use one socket on the wall. The power strip is in a drawer.

Travel packing: This is where the Anker earns its price tag. My travel tech pouch used to contain: MacBook charger (200g), iPhone charger (50g), iPad charger (100g), earbuds charger (30g), plus associated cables — totaling about 380g of chargers alone plus bulk. Now: Anker 737 (240g) plus cables. I'm carrying less weight and less volume while gaining the ability to charge everything simultaneously from one outlet.

And the hotel room experience — arre yaar, this is what sealed it for me. Indian hotel rooms, especially budget business hotels in tier-2 cities, often have exactly two accessible outlets: one near the bed, one near the desk. If the desk outlet is behind the furniture, you're down to one. Previously, I'd plug in my laptop, wait for it to charge, swap to my phone, wait for that, then do the tablet. With the Anker, everything plugs in at once, charges overnight, and I wake up to 100% across all devices. The morning is calmer. I pack faster. I leave fewer things behind because there's only one thing to unplug.

I genuinely have not forgotten a charger in a hotel room since I started using the Anker. There's one brick to remember, not four. That alone — the elimination of charger anxiety — has been worth the Rs 7,999 in peace of mind.

Durability After Four Months and Eight Trips

A charger lives a rough life. It gets tossed in bags, yanked from sockets, subjected to temperature swings between AC hotel rooms and 35-degree outdoors, and jostled against other items in a tech pouch. After four months of this treatment, the Anker 737 shows minor cosmetic scuffing on the matte black surface — the kind of surface wear you'd expect from anything that lives in a bag with cables and adapters. No cracks, no loose bits, no structural issues.

More importantly, the ports still work perfectly. USB-C cables click in with a firm snap. USB-A cable fits snugly with no wobble. The wall plug pins show zero bending or loosening. I've run the three-device simultaneous charging test four times over the four months, and the charging speeds are identical each time — no degradation in performance.

Anker provides an 18-month warranty in India, which is standard for premium accessories. Their customer service, based on one email exchange I had about cable compatibility, responded within 24 hours with a clear, specific answer. Not a generic copy-paste reply, but a response that addressed my actual question. That level of support from an accessories brand is rare in the Indian market.

What I'd Improve (Nothing's Perfect)

The price. I've said it already, but Rs 7,999 is a psychological barrier for most Indian buyers. Chargers are mentally categorized as "cheap accessories," and asking someone to spend eight grand on one requires a mindset shift from "phone charger" to "universal power hub." Anker could make this easier with better India-specific marketing — compare it to the combined cost of the chargers it replaces (Apple 67W: Rs 5,900. Samsung 45W: Rs 2,499. iPad charger: Rs 2,000. Total: Rs 10,399), and the Anker actually saves money while doing more.

No included cables. At this price, at least one USB-C to USB-C cable should be in the box. It isn't. And if you want the full 140W PD 3.1 Extended Power Range speed, you need a USB-C cable rated for 240W, which is not the cable most people have lying around. Anker sells a compatible cable for about Rs 1,200 separately. This feels like a deliberate upsell, and at Rs 7,999, it's annoying.

The plug isn't foldable. The Indian three-pin plug sticks out permanently from the charger body. In a bag, those prongs poke through pouches, scratch other items, and are generally a nuisance. I wrap a rubber band around the plug prongs when traveling — it works but shouldn't be necessary on a premium product. A foldable or retractable plug design would have been a welcome touch at this price point. Several competing chargers from brands like Baseus have foldable plugs, so it's not an engineering impossibility.

The weight, technically. At 240g, the Anker is heavier than any single charger it replaces. But since it replaces multiple chargers, total bag weight goes down. This is only a "con" if you compare it one-to-one against a single phone charger, which is the wrong comparison. Still, for absolute weight minimalists, it's worth noting.

Who Should Buy This (And Who Shouldn't)

Buy the Anker 737 if:

• You travel regularly with a laptop, phone, and tablet (or any three USB-powered devices)
• You're tired of carrying multiple chargers and managing multiple cables
• You want one charger that works across different device brands (Apple, Samsung, OnePlus, Xiaomi, laptop — all of it)
• You share hotel room outlets with a spouse or travel partner and need to minimize outlet usage
• You want PD 3.1 future-proofing for upcoming 140W+ devices

Skip the Anker 737 if:

• You only carry a phone and wireless earbuds — a Rs 1,500 single-port GaN charger is all you need
• You rarely travel and your devices charge fine at home with existing chargers
• You use OnePlus and want the fastest possible phone charging — the proprietary SUPERVOOC 100W charger is still faster for OnePlus phones specifically
• Budget is very tight — the Ambrane 100W at Rs 2,999 is a decent compromise if Rs 7,999 is simply too much

A Quick Math Exercise on Value

Let me do the calculation I did in my head before buying, because it's what convinced me.

The chargers the Anker 737 replaced in my bag:

• Apple 67W MacBook charger: Rs 5,900 (Apple official price)
• Apple 20W iPhone charger: Rs 1,900
• iPad 20W charger: Rs 1,900
• Total individual charger cost: Rs 9,700

The Anker 737: Rs 7,999

So the Anker costs Rs 1,701 less than buying three separate chargers, charges all three devices simultaneously, takes up less space, weighs less total, and uses one outlet instead of three. Yeh toh seedha paisa vasool hai.

Even if you're comparing against cheaper third-party alternatives — say, a Rs 2,500 laptop charger, Rs 800 phone charger, and Rs 800 tablet charger totaling Rs 4,100 — the Anker costs Rs 3,899 more. But those three separate chargers take up three times the space, use three outlets, and give you three things to forget in hotel rooms. Is the consolidation, convenience, and quality worth Rs 3,899 to you? If you travel frequently, the answer is almost certainly yes.

The Bottom Line

The Anker 737 GaN charger is not exciting. It's not the kind of product you show off to friends. Nobody is going to ooh and aah over your charger brick at a dinner party. It's a boring, practical, extremely well-engineered tool that does one thing — deliver power to your devices — and does it better than any other single product I've used.

In four months, it has simplified my travel packing, eliminated charger-forgetting anxiety, reduced my outlet usage from three to one, and charged every device I own without a single hiccup. The build quality suggests it'll do this for years. The BIS certification and safety features mean I'm not gambling with my expensive devices. The PD 3.1 support means it'll handle whatever USB-C device I buy next.

Rs 7,999 is a lot for a charger. But the Anker 737 isn't really a charger. It's a portable power station that fits in your palm, replaces three or four separate devices, and works with everything you own. When I think of it that way — and when I remember the Rs 2,500 I once spent replacing a forgotten MacBook charger at Delhi airport — the price makes perfect sense.

Buy it during an Amazon sale if you want to save Rs 500-800. But honestly, even at full price, it's the most useful tech accessory I've bought this year. Not the most exciting. Not the flashiest. But the most useful, and in my book, useful beats flashy every single time.