Mupoer Rechargeable AA Lithium Batteries 3600mWh

Highlights

When AA-powered devices go through batteries quickly, replacing them over and over gets old. This Mupoer set pairs two rechargeable 1.5V lithium AA batteries with a compact charger, giving you a way to recharge instead of routinely reaching for disposable cells.

Each battery is listed at 3600mWh, and the product is aimed at higher-power devices. That makes it worth considering for things like toys or digital cameras, as well as some Blink devices.

The listing claims up to 2,500 charge cycles and says the charger can activate a battery at 0V. Those are product claims, not a promise of the same lifespan in every device or charging situation.

Best use cases

A solid pick if you want rechargeable AA batteries for a compatible device that uses 1.5V cells and you’re comfortable using the included charger. The two-battery count makes this a small set rather than a bulk supply, so it may suit a specific device or a first try with rechargeable lithium AAs.

Picture swapping batteries in a toy or camera, then plugging the charger into a USB-C power source while you get on with your day. The input can come from a PC, plug, power bank, or car charger, the listed preferred charging power is 5V 1A. The charger’s compact storage-box design is intended to keep the pair together between uses.

Keep in mind that compatibility is not universal: the listing says these batteries are not for smoke detectors, and some Blink models are unsuitable. Check the device’s battery requirements before buying rather than assuming every AA compartment will work with lithium cells.

Tips for day-to-day use

The charger uses indicator lights to show status. A flashing green light means charging, while steady green means fully charged. Steady red can indicate an incompatible adapter, damaged cable, or a temperature issue, flashing red can signal unsuitable batteries or an electrical condition such as overcurrent, overvoltage, or undervoltage. If a red light appears, treat it as a reason to check the setup rather than assuming the batteries are charging normally.

One practical difference from buying disposable AAs is that you’ll need to keep this charger available and allow time to recharge the pair. The listing describes charging as taking about three hours, but it doesn’t specify conditions for that figure. From the way it is set up, the charger works only with Mupoer lithium batteries, not other brands, so it isn’t a general-purpose AA charger for a mixed battery drawer.

Questions before you buy

Will these work in every Blink device? No such blanket compatibility is stated. The listing warns that some Blink models are unsuitable, so check your model’s requirements first.

Can I use them in a smoke detector? No. The product information explicitly says they are not compatible with smoke detectors.

Can the charger charge other brands of lithium AA batteries? The listing says it is compatible only with Mupoer lithium batteries. Don’t count on it to charge other brands.

Final verdict

You may want to skip it if you need batteries for a smoke detector, haven’t confirmed compatibility with your Blink model, or want one charger to handle several battery brands. If your device accepts these 1.5V lithium AAs and you value recharging a small pair over repeatedly replacing disposable cells, the set’s compact charger and stated high capacity are useful reasons to consider it. The main tradeoff is the narrow charger compatibility, so this makes more sense as a dedicated set than as an all-purpose battery solution.