Xtar LR 3000mAh Batteries (x4)
(4 reviews)
The Xtar LR 3000mAh AA batteries hold a true constant 1.5V right to the end, recharge over USB-C with no dedicated charger, and last over 1200 cycles.
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Characteristics
- Capacity: 3000 mAh (≈4500 mWh)
- Voltage: 1.5 V constant (vs 1.2 V on NiMH)
- Charging: USB-C, 3.9 h, 4-in-1 cable included
- Pack size: Pack of 4 batteries + case
- True 1.5V plus built-in USB-C, no dedicated charger
Detailed overview: Xtar 1.5V USB-C rechargeable AA battery
The Xtar LR 3000mAh belongs to a new generation of rechargeable lithium AA batteries designed to fix a well-known problem with classic rechargeables: voltage. A disposable alkaline delivers 1.5V, but a rechargeable NiMH cell caps out at 1.2V. Plenty of modern devices, especially smart thermostatic radiator valves, smart locks and some precision remote controls, are calibrated for 1.5V and wrongly read a NiMH cell as already flat. The Xtar LR 3000mAh sidesteps this with a linear discharge curve that keeps the voltage close to 1.5V for most of its runtime, only tapering off near the end, exactly like a disposable alkaline.
Second differentiator: each cell has its own USB-C charging port, tucked under the negative terminal. There's no dedicated charger to buy: the included 4-in-1 cable (which charges all 4 cells in the pack at once from a single USB port) is enough for a full charge in a claimed 3.9 hours. A smart 3-stage charging algorithm protects the cell against overcharging and automatically restarts a cell that has gone into deep discharge, a state that usually kills a regular rechargeable for good.
| Capacity | 3000 mAh (about 4500 mWh at 1.5V) |
| Max discharge current | 2.5 A |
| Charge cycles | over 1200 |
| Temperature range | -20 °C to 60 °C |
| Weight | about 25 g per cell |
| Dimensions | 50 x 14 mm (standard AA / LR6 format) |
The 2.5A discharge cap makes it best suited to moderate-to-steady draw devices (game controllers, toys, headlamps, smart-home gear, connected cameras like Blink) rather than heavy, bursty loads such as fast-cycling camera flashes, where high-capacity NiMH cells remain preferable. Over time, several users report that one cell out of a set of 4 can hold charge slightly worse than the others, without undermining the set as a whole: Xtar builds in several protections (overcharge, deep discharge, overheating, short circuit) and a leak-resistant design meant to be more reliable than a standard alkaline in a failure.
Sold as a pack of 4 with a charging cable and a clear storage case, the Xtar LR 3000mAh clearly targets smart-home households that want to stop replacing disposable batteries without giving up the voltage reliability that native 1.5V brings.
Comparison
Against the Xtar LR 3000mAh, three families of AA batteries compete for searches like "1.5V rechargeable AA battery" or "NiMH alternative": the Panasonic Eneloop Pro, our catalogue's high-capacity NiMH reference; the Energizer Ultimate Lithium, a disposable lithium cell that also delivers a true 1.5V; and the PaleBlue AA, one of the few other rechargeable lithium batteries with a built-in USB-C port. Here's how the Xtar LR 3000mAh stacks up against these three alternatives.
| Criterion | Xtar LR 3000mAh | Panasonic Eneloop Pro AA | Energizer Ultimate Lithium AA | PaleBlue AA USB-C |
|---|---|---|---|---|
| Real voltage | 1.5 V constant | 1.2 V (NiMH) | 1.5 V (non-rechargeable) | 1.5 V constant |
| Rechargeable | Yes, built-in USB-C | Yes, external charger required | No, single-use | Yes, built-in USB-C |
| Capacity | 3000 mAh (≈4500 mWh) | 2500 mAh | ≈3000 mAh (single-use) | ≈1700 mAh (2550 mWh) |
| Charge cycles | over 1200 | ≈500 | not applicable | over 1000 |
| Observed price (pack of 4) | ≈£24 | ≈£22 | ≈£9 | £19.99 |
In short, the Xtar LR 3000mAh combines what its rivals only offer separately: a true 1.5V like the Energizer Ultimate Lithium, but rechargeable like the Eneloop Pro, plus a higher capacity than other USB-C lithium batteries like the PaleBlue. The Eneloop Pro remains unbeatable on price and everyday durability for devices that aren't voltage-sensitive, and the Ultimate Lithium keeps the edge for occasional use with no recharging at all, but for a voltage-sensitive device you want to recharge without stacking up chargers, the Xtar stays the most versatile pick.
Related video
Video: Xtar USB-C AA Battery Review - Published on 18/06/2025
Our tester's review: Pierre Freysinger
We ran a set of Xtar LR 3000mAh in a smart lock and in a couple of thermostatic radiator valves, two devices notoriously fussy with regular rechargeables: no false low-battery warnings since, the voltage stays pinned much closer to 1.5V than any NiMH cell manages. The best everyday feature is the included 4-in-1 cable, which charges all 4 batteries at once from a single USB-C port in the claimed 3.9 hours, no dedicated charger needed. In a heavily used game controller, runtime comfortably matches disposable alkalines, with the added bonus of recharging as often as you like. Two honest caveats: on a set of 4, it isn't unusual for one cell to hold charge slightly worse than the other three (an isolated issue, but one several buyers report), and it's safer to recharge with a plain USB cable rather than a beefy PD fast charger, since some users hit charging glitches with that kind of adapter. For anyone done with throwing away batteries or fighting NiMH's 1.2V, this pays for itself quickly.
Frequently asked questions: Xtar 1.5V USB-C rechargeable AA battery
Yes. Thanks to its linear discharge curve, it holds a voltage close to 1.5V for most of its use, unlike classic NiMH rechargeables which cap out at 1.2V. Voltage only drops near the very end of the charge.
Each cell has its own USB-C port. The included 4-in-1 cable charges all 4 batteries in the pack at once from a single USB port, for a full charge in about 3.9 hours.
Xtar rates them at over 1200 charge cycles, which works out to several years of regular use before capacity noticeably drops.
Yes, it's one of their best use cases: these devices are calibrated for 1.5V and often wrongly flag a NiMH cell (1.2V) as flat. The Xtar LR 3000mAh's constant voltage avoids that false reading.
Yes, the pack of 4 batteries ships with a 4-in-1 USB-C cable and a clear storage case for all 4 cells.
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Published on 30/08/2026