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WARNING: EBL 'Pre-Charged' batteries are NOT Low-Self-Discharge type
About four months ago, I purchased a set of the EBL High Capacity 2300mAh 1500 Cycle AA Ni-MH Pre-charged Rechargeable Batteries, in addition to the EBL 1500 Cycle 1100mAh AAA Ni-MH Rechargeable Batteries. Most name brand pre-charged batteries (such as Sanyo eneloop) are only rated 2000-2100mAh for AA, 800mAh for AAA. Those EBL batteries looked like great values since they claim to be 'Pre-Charged' and offer higher capacity at lower price. I tested four of those EBL 2300mAh AA batteries, using my La Crosse BC1000 Battery Charger/Analyzer. After just three Discharge/Refresh cycles, the average capacity leveled off at 2555mAh. This is 11% HIGHER than the advertised '2300mAh', and on par with the far more expensive eneloop XX (2500mAh). The AAA version gave an average capacity of 1040mAh. Looks good so far... Their long term charge-retention rates, however, did not live up to the hype. - I checked two of those EBL AA batteries after 90 days of storage. Their remaining charges were 1711mAh and 1828mAh, respectively. This corresponds to just 66% and 71% of their originally measured capacity of 2580-2590mAh. - I also checked four EBL AAA cells after 100 days of storage. They were even worse. One cell was completely dead (0mAh). The other three range from 695 to 848mAh, or 63-77% of rated capacity. EBL claims "Improved low self discharge makes it still maintain 75% of capacity after 3 year of non-use". This claim proves to be completely bogus. The self-discharge rates of those EBL batteries are similar to that of ordinary NiMH batteries. They should never be advertised as 'Pre-Charged' or 'Low-Self-Discharge' in the same league of Sanyo eneloop. Similarly, I cannot trust the cycle-life claim for those EBL batteries. Notice that the title of this product says '1500 Cycles', while the product description says "can be recharged up to 1200 times". It sounds like EBL marketing people simply pulled those numbers out of their you-know-where. They probably figured that most users cannot tell the difference, anyway. Bottom Line: I despise false advertisement. Therefore I cannot recommend this or any other EBL products. [Update on Dec 7, 2014] I checked the status of another pair of EBL 2300mAh AA cells after 5.5 months in storage. The average remaining charge is 1374mAh, or 54% of the original capacity. At this rate, those cells will be completely exhausted after just one year in storage. [Update on Jan 3, 2016] I noticed the Amazon product page has removed the word 'Pre-Charged' from its title. Now it reads "EBL High Capacity 2300mAh AA Ni-MH Rechargeable Batteries". However, the product description still claims "maintain 75% of capacity after 3 year of non-use", and on each cell it still says "low self-discharge" inside yellow bar. So I still consider it false advertisement.
September 2014 · Health and Household
the product in question
EBL AA Rechargeable Batteries 2800mAh Ready2Charge Quality AA Batteries - 16 Counts
4.5★ · 14,802 ratings, as of 2023
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