Ready to Use NiMh Rechargeable Battery 9V/250mAh Card Wrap Manufacturer

Most applications where there is a high-energy consumption and demand, is where NiMH battery packs excel. They are also suitable in applications as backup power source, where the NiMH batteries have a BMS in order to control the charging and discharging to improve the lifetime of the battery pack.

Yes, nickel metal hydride batteries will self-discharge 1% per day if used in a low-energy consummation or stand-by device and the chemistry has been known to succumb to the memory effect. And we can develop a system that trickle charges (charge rate of less than 0.025 C (C/40) ) the battery in order to ensure that the pack is always at its maximum capacity and reduce the negative effects of overcharging.

The primary gases emitted from the nickel-metal hydride battery when subjected to excessive overcharge or over-discharge is hydrogen and oxygen. Battery enclosure should not be airtight and should be strategically vented. Isolation of the battery from heat-generating components and ventilation around the battery will also reduce thermal stress on the battery and ease design of appropriate charging systems.

No, you do not. However, NiMH battery packs are amongst the hardest batteries to charge accurately and because the BMS solutions are very cost effective we recommend having one in your design. The charging for NiMH batteries is based on forcing current through the battery whereas with lithium ion and lead acid batteries you can control overcharge by just setting a maximum charge voltage. Therefore, having an electronic safety in place will increase the overall life of the battery.