Keeppower 14500 950mAh
A 14500 cell (AA-sized) that charges directly via micro-USB, no external charger needed: the Keeppower 950mAh, handy and protected.
Characteristics
- Capacity: 950 mAh (min. 900 mAh)
- Charging: Built-in micro-USB port
- Protection: Built-in circuit (PCB)
- Discharge: Up to 2A continuous
- Direct micro-USB charging, no external charger needed
Detailed overview: Keeppower 14500 950mAh USB protected cell
The Keeppower 14500 950mAh stands out from the rest of the range with a very handy feature: a micro-USB charging port built directly into the cell. No more need for a charger dedicated to lithium cells, a simple USB cable (often already at hand) is enough to charge it, a real plus for anyone travelling light or needing to quickly get a compact torch back in action.
The 14500 format matches the dimensions of a classic AA battery (around 14mm diameter, 50mm length), but with a much higher voltage: 3.6V nominal versus 1.5V for an alkaline AA. This is therefore not a direct swap for an AA battery without first checking your device's compatibility. On capacity, the cell rates at a typical 950 mAh, with a guaranteed minimum of 900 mAh, and supports continuous discharge current up to 2A, enough for compact torches or small electronic devices, though more limited than the brand's 18650, 21700 or 26650 formats.
Like the rest of the Keeppower range, this cell carries a built-in protection circuit (PCB) against overcharge, deep discharge and short-circuit, a welcome safety feature on such a compact format, trickier to handle bare than larger formats. Standard charging via the USB port stays modest (a few hundred mA), designed to preserve the cell's lifespan rather than chase speed.
Keeppower remains a niche brand, rarely found in mainstream retail: it is mainly available from specialist lithium-cell retailers that ship across Europe. For anyone after a protected 14500 cell that is handy to charge anywhere and reliable over time, it is a reference worth considering, particularly for compact pocket torches.
Our tester's review: Pierre Freysinger
On a format as small as the 14500, this Keeppower cell's micro-USB function genuinely changes daily use: no more digging out a dedicated charger, a simple USB cable is enough to top it up, handy while travelling or hiking. Tested in a compact torch, it holds its rated capacity reliably, with decent runtime for such a small format. The built-in protection circuit brings welcome reassurance on a cell this size, trickier to handle bare: a clean cut-off on short-circuit or over-deep discharge. Discharge current stays modest (up to 2A), which limits its use to less power-hungry devices, not to be confused with an 18650 or 21700 built for high power. Another point worth knowing: this is not a classic AA battery you can swap in like-for-like, its 3.6V voltage is well above a AA's 1.5V, so check your device's compatibility first. For a compact torch or a small AA-format gadget, the convenience of USB charging clearly makes the difference.
Frequently asked questions: Keeppower 14500 950mAh USB protected cell
Directly through its built-in micro-USB port, with a simple USB cable, no dedicated external charger needed. That is a real convenience gain over a classic 14500 cell.
Not directly: its 3.6V nominal voltage is well above a AA battery's 1.5V. Check your device's compatibility before using it in place of a AA.
Its typical capacity is 950 mAh, with a guaranteed minimum of 900 mAh, a good figure for this small, protected, USB-rechargeable format.
Yes, it has a built-in protection circuit (PCB) against overcharge, deep discharge and short-circuit, a useful safety feature on such a compact format.
Other products in the "14500 batteries" category
Nitecore NL1411R 14500 (1100mAh)
£11.95 (2)
The Nitecore NL1411R pushes the 14500 format to 1100 mAh with a built-in USB-C port: a modern rechargeable alternative to AA cells in your compact torches.
Soshine 14500 900mAh
The Soshine 14500 900mAh, a rechargeable 3.7V lithium battery in a compact AA size: ideal for torches, cameras and lithium-compatible devices.
Published on 05/09/2026