Panasonic Eneloop AAA HR03 Rechargeable Batteries 800mAh - 4 Pack

The Panasonic Eneloop AAA HR03 is a nickel-metal hydride (NiMH) rechargeable battery rated at 800mAh and 1.2V, supplied pre-charged and ready to use straight from the pack. Each battery can be recharged up to 2,100 times, giving approximately 1,680,000mAh of cumulative capacity over its lifespan compared to 800mAh from a single-use alkaline AAA.

Designed for everyday household devices including remote controls, wireless keyboards, computer mice, game controllers, torches and compact cameras, the Eneloop AAA performs well in both high-drain devices (digital cameras, flash units) and low-drain devices (clocks, remote controls). The batteries fit any device that accepts standard AAA cells and can be charged in any NiMH-compatible charger. The low self-discharge chemistry retains up to 70% of stored capacity after 10 years of storage, so batteries left in a drawer or emergency torch remain functional without needing a top-up charge.

The pack of four ships in plastic-free cardboard packaging, with each battery pre-charged using solar energy at the Panasonic factory. The cells maintain stable voltage output across the discharge curve, delivering consistent performance until depleted rather than the gradual fade typical of alkaline batteries. Eneloop batteries also perform in cold conditions, maintaining higher voltage at sub-zero temperatures than alkaline equivalents, making them suitable for outdoor equipment, winter sports gear and vehicle emergency kits.

How many times can these batteries be recharged?

The Eneloop AAA can be recharged up to 2,100 times according to Panasonic testing. Actual cycle life depends on usage patterns, depth of discharge and charger quality, but most users achieve well over 1,000 cycles in typical household use.

Do they arrive charged?

Yes. Eneloop batteries are pre-charged with solar energy at the factory and can be used immediately. The charge level on arrival is typically 70-80% of rated capacity.

What charger do they need?

Any NiMH battery charger rated for AAA cells will charge Eneloop batteries. Panasonic recommends using a smart charger that detects full charge rather than a timed charger, to avoid overcharging and extend battery lifespan.

How long do they hold charge when not in use?

Eneloop's low self-discharge chemistry retains approximately 70% of capacity after 10 years of storage at room temperature. This means batteries stored in a drawer, emergency kit or seasonal device will still function without needing a refresh charge.