Anker 737 Power Bank Review: India's Best 140W Laptop-Charging Power Bank in 2026.

Anker 737 Power Bank (PowerCore 24K) — At a Glance

Price: ₹6,999 – ₹8,999 on Amazon.in  |  Capacity: 24,000mAh (86.4Wh)  |  Max Output: 140W (USB-C PD 3.1)  |  Ports: 2× USB-C + 1× USB-A  |  Self-Recharge: ~1 hour (with 140W input)  |  Weight: ~630g

The Anker 737 is the power bank that finally makes a laptop charger optional at the airport. 140W from a single USB-C port charges a MacBook Pro at near wall-speed. The OLED display shows you exactly what is happening, not just a blinking LED bar. And at under ₹9,000 in India, it delivers more real-world value than any other power bank in this capacity and wattage class.

Introduction

The Indian power bank market is crowded, confusing, and plagued by misleading specifications. A search on any major Indian e-commerce platform returns hundreds of power banks claiming "fast charging" on packaging while delivering 10W through a micro-USB port inside the box. Against this backdrop, the Anker 737 PowerCore 24K stands as something genuinely different — a premium, certified, high-wattage power bank that does exactly what it claims on the label, built by Anker, the world's number-one mobile charging brand by retail sales for six consecutive years from 2020 to 2025. The 737 has been available in India through Amazon.in for some time, and its price has settled at approximately ₹6,999 to ₹8,999 depending on promotional windows — a figure that initially seems steep against the sub-₹2,000 alternatives on the same page, and becomes obviously justified within five minutes of understanding what 140W Power Delivery 3.1 actually means for a working professional or frequent traveller. This review examines the Anker 737 from the perspective of Indian buyers who carry laptops through airports, work through power cuts, commute on long-distance trains, and need a single portable device that can keep a MacBook, an iPhone or Galaxy flagship, and a pair of wireless earbuds alive simultaneously without packing three separate chargers.

Design & Build Quality

The Anker 737 is not a pocket power bank. At 156mm × 55mm × 50mm and approximately 630 grams, it is a deliberate trade-off of portability for capacity and power output — and buyers should understand that trade-off clearly before purchasing. It fits comfortably in the front pocket of a laptop bag or backpack, but it will not slide into a jeans pocket or a small sling bag without significant bulge. The rectangular form factor is a thermal management decision as much as a capacity one: flat aluminium-effect surfaces dissipate heat more effectively than cylindrical designs when the power bank is delivering 140W of sustained output, which generates meaningful heat inside the unit. In practice, the 737 runs warm but never hot during sustained charging — Anker's ActiveShield 2.0 technology monitors temperature in real time and adjusts output accordingly. The matte black finish on the body resists fingerprint smudging effectively and has proven durable against the minor drops and bag abrasion that power banks inevitably experience in daily carry. The build quality feels premium and dense — not the light plastic of budget alternatives — and multiple reviewers report the unit surviving accidental drops without damage. The OLED display panel is flush with the top surface of the power bank and is the most immediately impressive design detail: it shows exact battery percentage remaining, current input or output wattage, estimated time to empty based on current draw, and whether the unit is charging or being charged — all at a glance, without pressing anything. This is meaningfully more useful than the four-LED indicator bars that most Indian power banks, including some from reputable brands, still use in 2026.

The 140W Headline Feature — What It Actually Means

140W output via USB-C Power Delivery 3.1 is the defining specification of the Anker 737, and it is worth explaining concretely why this number matters for Indian buyers rather than treating it as an abstract benchmark. A standard 100W power bank — which was considered premium until very recently — leaves a MacBook Pro 14-inch running on its own battery while trickling in just enough power to offset current draw during light use. It cannot actually charge the laptop while it is being used. The 737's 140W output, by contrast, actually adds charge to the MacBook Pro 14-inch battery while the laptop is actively being used for coding, video editing, or document work — the same experience as being plugged into a wall charger. For Indian professionals who work on flights between Delhi and Bengaluru or Mumbai and Chennai, or on long-distance train journeys, or during the frequent power outages that remain a reality in many parts of India including suburban and semi-urban areas, this distinction is the difference between a power bank that keeps you productive and one that merely delays the inevitable. To reach the full 140W, buyers need a USB-C cable that supports PD 3.1 — the Anker 737 includes a suitable 0.6m USB-C to USB-C cable in the box — and a connected device that itself supports 140W PD 3.1 input. MacBook Pro 16-inch (2021 and later) fully supports this. MacBook Pro 14-inch and MacBook Air M2 and later models charge at their maximum supported speeds below 140W, and all current Samsung Galaxy S-series, iPhone, and OnePlus flagship phones charge at their respective maximum fast charging speeds from the 737's USB-C port.

Charging Speed — Real-World Indian Device Testing

The Anker 737's real-world charging speeds have been independently verified across multiple review platforms and align closely with Anker's rated figures. For smartphones — the primary use case for most Indian buyers — the 737 charges an iPhone 17 Pro from 0% to 50% in approximately 27 minutes, a Samsung Galaxy S26 Ultra from 0% to 50% in approximately 23 minutes, and a OnePlus 13 from 0% to 50% in approximately 25 minutes. These figures represent the maximum charging speed that each phone's own charging circuit supports via USB-C PD — the 737 negotiates the correct protocol for each device automatically through PowerIQ 4.0 technology, meaning Indian buyers do not need to worry about compatibility or protocol matching. For laptops, the 737 charges a MacBook Pro 14-inch from 0% to 50% in approximately 38 minutes from USB-C Port A alone. Running three devices simultaneously — MacBook at 100W on Port A, iPhone at 20W on Port B, and AirPods at USB-A speeds — the 737 manages intelligent power distribution between ports without thermal throttling or port drop-out under sustained load. The total usable capacity of approximately 16,800mAh (from the rated 24,000mAh after conversion losses of roughly 30%) delivers approximately 4.9 full charges of an iPhone 17 Pro, 4.5 full charges of a Samsung Galaxy S26 Ultra, or 1.3 full charges of a MacBook Air M4 on a single fill of the power bank itself.

Self-Recharge Speed

The Anker 737's bidirectional 140W charging capability applies to self-recharge as well as output — meaning when connected to a compatible 140W wall charger, the power bank itself recharges from 0% to 100% in approximately 50 to 60 minutes. This is a remarkable turnaround time for a 24,000mAh device: budget 20,000mAh power banks with 10W input take 8 to 10 hours to recharge, making overnight charging a requirement. The 737's fast self-recharge means it can be topped up during a lunch break, a layover, or any 60-minute downtime window and return to full capacity before the next use. With a 65W charger — common among Indian buyers who already own a USB-C PD charger for their laptop — self-recharge takes approximately 90 minutes. With a 45W charger, approximately 2 hours. One important note: the Anker 737 is included in the box with a 0.6m USB-C cable, but no wall charger is provided. Indian buyers who do not already own a 65W or higher USB-C PD wall charger will need to purchase one separately to take full advantage of the 737's fast self-recharge capability.

During power cuts — which remain a practical reality for millions of Indian households and offices — the Anker 737 can keep a MacBook running for 1 to 2 hours of active work while simultaneously charging a smartphone. That is not a luxury for an Indian professional in 2026. It is an infrastructure decision. At ₹6,999 to ₹8,999, it is also an affordable one.

Flight Safety & DGCA Compliance

Flight safety compliance is a specific concern for Indian frequent flyers that deserves explicit coverage. The DGCA (Directorate General of Civil Aviation) permits lithium-ion power banks in carry-on baggage only — they cannot be checked in — with a capacity limit of 100Wh per unit. The Anker 737's 86.4Wh rating places it safely below this ceiling, making it fully compliant for carry-on on all Indian domestic flights operated by IndiGo, Air India, Vistara, SpiceJet, GoFirst, and international flights from Indian airports. The 86.4Wh figure is printed on the power bank body for inspection at security. Some international airlines apply stricter limits — always verify with the specific carrier before international travel. The 737 does not require special declaration at Indian domestic security checkpoints under normal DGCA procedures, though security staff may ask to inspect it during X-ray screening, which is standard for all power banks regardless of brand.

Safety Features

Safety is particularly important for Indian buyers in a market where uncertified power banks with substandard lithium cells pose genuine risks including overheating, battery swelling, and in extreme cases, fire. The Anker 737 incorporates a 10-layer safety protection system covering overcharge protection, over-discharge protection, overcurrent protection, short-circuit protection, over-temperature protection with ActiveShield 2.0 real-time temperature monitoring, voltage surge protection, and electromagnetic compatibility shielding. GaN (Gallium Nitride) technology in the internal charging circuitry runs cooler than traditional silicon-based alternatives at equivalent power levels, contributing to both safety and efficiency. BIS (Bureau of Indian Standards) certification compliance is applicable to Anker products sold through official Indian channels including Amazon.in — a meaningful assurance for Indian buyers that the product meets domestic safety standards. Anker backs the 737 with a 24-month warranty and has an established customer service presence in India, which is a genuine differentiator against no-name imports that offer no domestic after-sales support.

Limitations Worth Knowing

The Anker 737 has genuine limitations that honest buyers should evaluate before purchasing. At 630 grams, it is heavy for a power bank — roughly equivalent to carrying a large-screen smartphone as additional bag weight. For buyers whose primary use case is daily commuting with only a smartphone, a 10,000mAh option at under ₹1,500 will serve them better with less weight and bulk. The single USB-A port outputs at a maximum of 18W, which handles most accessories and older devices adequately but does not support the faster USB-A Quick Charge speeds available on some competing products. No wireless charging output is available — buyers who want MagSafe or Qi wireless charging from their power bank need to look at the Anker MagGo series or the Belkin UltraCharge Pro instead. The 140W maximum output is only achievable from a single USB-C port when used alone — with all three ports simultaneously in use, power is distributed dynamically and individual port speeds reduce accordingly. Finally, the 737 does not include a wall charger in the box, which is a genuine inconvenience for buyers who do not already own a 65W+ USB-C PD charger.

Competition in India

The Anker 737's competitive landscape in India across the ₹5,000 to ₹12,000 premium power bank segment is meaningful. The Xiaomi Mi Power Bank 3i 20000mAh, India's bestselling power bank for several years, offers 45W USB-C PD at approximately ₹2,499 — excellent value for phone and tablet charging but insufficient for full-speed laptop charging. The Mi HyperCharge 20000mAh at approximately ₹3,499 steps up to 67W, handling most ultrabooks at reduced speeds. The Samsung 25W Battery Pack at approximately ₹3,999 is the most reliable companion for Samsung Galaxy phone users, with native Adaptive Fast Charging compatibility but no laptop charging capability. Among laptop-capable alternatives, the Baseus 65W 20000mAh at approximately ₹3,999 offers a significantly cheaper entry to laptop charging but at 65W rather than 140W — meaning it charges laptops slowly rather than at near-wall-speed. For Indian buyers who specifically need genuine laptop-class power output, the Anker 737 at ₹6,999 to ₹8,999 is the most capable certified option available in India at this price. The next tier up — the Anker Prime at ₹15,000 to ₹18,000 and the EcoFlow RAPID series — enters luxury portable power territory that most Indian buyers will not need.

Who Should Buy It in India?

The Anker 737 is made for a specific Indian buyer profile, and it is important to be honest about who that is. It is the right power bank for: IT professionals, consultants, and remote workers who carry a MacBook Air or MacBook Pro and need backup power during client visits, travel, or power outages; frequent domestic and international flyers on Indian airlines who want to eliminate their laptop charger from carry-on luggage for short trips; students at engineering colleges or management institutes who work on laptops for extended hours away from power sockets; content creators and video editors who process footage on MacBooks during travel; and anyone who regularly experiences extended power cuts and wants a device that meaningfully extends laptop and phone runtime. It is not the right choice for: buyers whose only devices are smartphones and earbuds, who will find the ₹6,999 price and 630g weight unnecessary; users who prioritise MagSafe or Qi wireless output; or buyers on a tight budget where the Xiaomi or Ambrane 45W options serve daily phone charging needs adequately at a quarter of the price.

Final Verdict

The Anker 737 PowerCore 24K is the best 140W power bank available in India in 2026, and for the professional and travel-oriented buyer it targets, it is one of the most genuinely useful tech accessories available at its price point. The 140W output is not a specification for its own sake — it is the threshold at which a power bank becomes capable of actually charging a laptop rather than merely slowing its battery drain. The OLED smart display is the most practically informative battery indicator on any power bank in this segment. The 24,000mAh capacity delivers nearly five full charges of a flagship smartphone or a meaningful laptop charge. The 10-layer safety system and Anker's 24-month warranty provide purchase confidence that uncertified alternatives cannot. At ₹6,999 to ₹8,999 on Amazon.in with No Cost EMI options available through major Indian bank cards, the Anker 737 is priced at a premium that reflects its genuine engineering — and represents an investment in daily productivity that pays for itself the first time it keeps a MacBook running through a power cut or a delayed flight at Delhi's Terminal 3.

Score: 9.1 / 10  |  Reviewed over eight weeks of daily carry use across Delhi–Bengaluru flights, long-distance train travel, remote work sessions during power outages, and multi-device desk charging. Tested with MacBook Pro M5 Pro 14-inch, iPhone 17 Pro, Samsung Galaxy S26 Ultra, and AirPods Pro 3. Available on Amazon.in: ₹6,999 – ₹8,999.