Anker 313 Power Bank (PowerCore 10K) Review

Overview

The Anker 313 Power Bank (PowerCore 10K) is a 10,000 mAh battery pack aimed squarely at hikers, travelers, and everyday users who want reliable phone charging without spending much money or thinking too hard about it. At around $26, it’s one of the most accessible power banks in its capacity class, and Anker’s reputation for durability has made it a long-standing recommendation among thru-hikers. That said, it’s showing its age in a few key areas that matter on trail.

Key Specs

Spec	Value
Capacity	10,000 mAh (37 Wh)
Weight	213 g (7.5 oz listed; real-world measurements trend closer to 8.4–8.5 oz)
Dimensions	5.87 × 2.68 × 0.55 in
Output	5V / 2.4A (USB-A only)
Input	5V / 2A (USB-C or Micro-USB; not simultaneously)
Ports	1× USB-A out, 1× USB-C in, 1× Micro-USB in
Pass-Through Charging	No
Quick Charge / PD	No
Trickle Mode	Yes (for earbuds and low-draw accessories)
Recharge Time	~5.5 hours
Airline Carry-On	Yes (37 Wh, well within limits)
Warranty	18 months
Price	~$26
Comparison	See how Anker 313 Power Bank compares to similar gear

Performance

Capacity and Real-World Charges

Independent capacity testing yielded 34.89 Wh of usable power — slightly below the rated 37 Wh — which works out to roughly 6,800 mAh at 5V. That’s still enough to charge most phones around two full times.

Anker’s own estimates are a bit more generous:

the manufacturer claims approximately 2.25 charges for an iPhone 12, 1.6 charges for a Galaxy S20, and 1.2 charges for an iPad mini 5.

In practice, plan on two solid phone charges, not three — three requires a very small phone battery and conservative use habits.

Charging Speed

Anker’s PowerIQ and VoltageBoost technologies deliver up to 2.4A, though the bank does not support Qualcomm Quick Charge.

That output is sufficient for steady phone top-offs, but if you’re hoping to fast-charge a modern Android flagship or power a tablet at full speed, you’ll be disappointed.

It lacks Power Delivery as well, so tablets and laptops won’t charge at their top speeds.

Recharging the bank itself is the slower end of the category. CleverHiker’s testing put the recharge time at about 5.5 hours — more than an hour longer than many competing 10K banks. That’s a real consideration on a thru-hike when hostel outlets are limited and you’re racing out the door in the morning.

Trickle Mode

One genuinely useful feature: trickle charging mode provides optimized output for low-power devices like earphones and Bluetooth speakers. You activate it by pressing the power button twice or holding for 2 seconds until the LED indicator turns green. This prevents the bank from auto-shutting off when it detects minimal draw — a real problem when topping off wireless earbuds or a small GPS tracker without trickle mode.

Durability

This is where the Anker earns its thru-hiker following. The PowerCore 10K continued working normally after an 8-foot drop test and held up across multiple backpacking trips in wet and rugged conditions. The exterior developed cosmetic scratches over time, but the construction felt noticeably sturdier than similarly priced competitors. CleverHiker has used the same Anker power bank for over six years and 8,000 miles of backpacking, and reports that word of Anker product failure is less common than other power bank models.

The Weight Problem

Anker lists the weight at 7.5 oz, but independent measurements put it at 8.4 oz.

CleverHiker’s testing found it was the heaviest battery in its capacity range.

That gap matters if you’re trying to build an ultralight kit.

At about 4.15 Wh per ounce (using the measured weight), the energy density is decent but not leading the pack.

If weight-to-capacity ratio is your primary lens,

a bank like the Nitecore NB10000 delivers a better Wh-per-ounce ratio for ultralight backpackers.

No Pass-Through Charging

This is a genuine trail inconvenience. The PowerCore Slim does not include pass-through charging — every other power bank CleverHiker tested had this feature. For weekend warriors it’s less critical, but anyone who needs to recharge in a communal area at a café on a thru-hike will need to take this into account. Outlets can be at a premium in high-traffic areas, making the ability to charge a device and the bank simultaneously a big time saver.

Port Confusion

Worth flagging for newer buyers: the USB-C port on the Anker 313 is input only — it cannot be used to charge your devices. Most new battery packs have a USB-C port for output, so this is one area where the Anker 313 lags. If you’re using a device that only accepts USB-C charging (and you don’t have a USB-A to USB-C adapter cable), you’ll hit a wall.

The 4-LED battery indicator gives only a rough estimate of remaining charge, and as one verified buyer noted, the indicator reads non-linearly — it stays at four lights for a long time before dropping quickly through the lower levels. Not a dealbreaker, but don’t rely on it for precise planning.

Pros & Cons

Pros

• Strong durability record — one of the most reliable banks at any price
• Trickle charging mode handles earbuds and low-draw accessories without auto-shutoff
• Dual input options (USB-C and Micro-USB) give flexibility for recharging the bank
• Fly-friendly at 37 Wh, comfortably within airline carry-on limits
• 18-month warranty and dependable Anker customer support
• Slim, pocketable form factor at just 0.55 in thick
• Around $26 — hard to beat for the reliability you get

Cons

• No USB-C output — the only output port is USB-A, which is increasingly limiting
• No pass-through charging; one of the few 10K banks on the market without it
• No Qualcomm Quick Charge or Power Delivery
• Actual weight runs 8.4–8.5 oz, noticeably more than the 7.5 oz listed spec
• Recharges itself slowly (~5.5 hours)
• Only one device at a time
• 4-LED indicator is coarse and reads non-linearly

Who Should Buy This

The Anker PowerCore 10K is a simple, durable, and dependable battery pack that prioritizes reliability over cutting-edge performance. It consistently delivers steady output and proved tough enough for regular backcountry use. Ounce-counters will want to look elsewhere, but it’s a solid all-rounder that won’t break the bank.

It’s the right pick for weekend hikers and thru-hikers who want a phone-charging workhorse that won’t fail them in mile 400 — and who aren’t running a USB-C-only gear setup. If you’re managing multiple devices, need pass-through charging, or are shaving every gram, look at the Nitecore NB10000 Gen 4 or Anker’s own newer PD-equipped models instead.

Verdict

The Anker 313 PowerCore 10K is the Toyota Corolla of power banks: not exciting, not class-leading on any single metric, but almost certainly still running when flashier competitors have given up. There’s a reason so many thru-hikers rely on Anker products for six-month-long hikes — what the bank may lack in efficiency and features, it makes up for in reliability and durability. At $26, it’s a defensible pick for phone-only charging on shorter trips, but if you’re already shopping and can stretch the budget, a model with USB-C output and pass-through charging will serve you better on a long trail.

Rating: 6.5 / 10