1.2V AA 2500 mAh Panasonic Eneloop Pro NiMH Battery Tests

14 Mar

We got a pack of the latest generation Panasonic Eneloop Pro AA NiMH batteries with 2500 mAh capacity to check out and see what you can expect from what are considered as one of the best rechargeable NiMH batteries out there. These batteries come pre-charged with solar energy and are low self discharge, meaning that they are capable of retaining up to 85% of their capacity in a year. The Eneloop Pro are great choice for use with devices that require higher current and are also suitable for use in low temperature conditions of up to -20 degrees Celsius with good performance. According to the specifications they should be good for 500 recharge cycles. Looking back a couple of years back when we have tested an earlier generation Sanyo Eneloop XX AA NiMH batteries it seems that things have not changed that much in terms of rated capacity or battery specifications.

The 1.2V AA 2500 mAh Panasonic Eneloop Pro NiMH batteries are rated at minimum 2500 mAh capacity and our discharge tests have shown really good results with very close to that capacity usable at constant current loads of 0.2A and even 0.5A. Going for a higher discharge load of 1.0A and even 2.0A and the batteries still manage to perform surprisingly well at over 2300 mAh usable capacity in both cases. We remind you that these batteries are intended to be used for high drain devices, so we expected to see good performance with higher current loads, but we are also going to be testing them at even higher loads in a separate test to see where is the limit. So it seems that not only the specifications, but also the usable capacity of the newer Panasonic Eneloop Pro is very similar to that of the older generation Sanyo Eneloop XX that we have tested a couple of years ago. The good news is that there is no drop in quality and the new Eneloop Pro rechargeable batteries are still one of the best NiMH AA batteries you can currently get on the market.

The performance of the 1.2V AA 2500 mAh Panasonic Eneloop Pro NiMH batteries in our tests:

– 2472 mAh at 0.2A load
– 2453 mAh at 0.5A load
– 2388 mAh at 1.0A load
– 2322 mAh at 2.0A load

– 3.080 Wh at 0.2A load
– 3.015 Wh at 0.5A load
– 2.870 Wh at 1.0A load
– 2.601 Wh at 2.0A load

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