Top critical review
7 people found this helpful
Not High Performance but capacity and price seem resonable
on 9 February 2016
I used these batteries in Neato XV robot as replacement. The hoover was used once a week and has current consumption around 0.3-0.5C per battery.
The two batteries out of 24 failed after nearly 6 months - replaced with spare. Another two failed about a month later. Picked 2 new batteries from the pack today and re-tested before applying using laboratory multimeter and professional charger/discharger (IMAX B6).
1. The voltage drops sharply to below 1.100V when discharged only at 1.7A for 20 minutes which is only 0.6C of claimed 2900 mA. Typically NiMH batteries should easily handle 2C current (i.e. 4.8 Amps) without a major voltage drop. Some special RC batteries even 10C or 20C. As these batteries are called "High Performance" I would expect at least 5 Amps with a minimum V drop.
2. Short live span considering 12 months infrequent usage (60 partial charge/discharge cycles). 17% died in a year.
Final comments - if you planning to use these in sensitive electronic devices that require higher current (1.5A+) and keep reasonably high voltage at the same time (1.2V) (torch/RC/robots etc) look somewhere else these are definitely not "High Performance" batteries.
When to buy?
The capacity seems to be good therefore they may be a good choice for a low current devices (toys/small cameras/radios etc.) and also they seemed priced reasonably I therefore give it 3 stars.