Custom rechargeable battery pack utilize lithium chemistry provides both high voltage and excellent capacity, leading to a unprecedented high density. most applications, like cell phones, medical devices, electric vehicles, require such high density that only lithium chemistry can reach. However, for some applications we see, custom Nickel Metal Hydride/NiMH battery packs are more cost effective on style and manufacture and don't accompany all the potential harm related to lithium product. NiMH batteries came out since 1970s. The technology has been driven by its high density (compared with NiCd and Lead Acid batteries), environmentally, friendly, long cycle life, safety and reliability record. NiMH battery generally don't need the complicated BMS/battery management system which is essential for lithium battery, Cestpower design and manufacture BMS for NiMH battery packs that improve cycle life and communicate with the client's device so as to supply an equivalent information as a lithium battery pack.

This is where the 2 big differences are when it involves these two chemistries:

Cost: NiMH is a smaller amount than 50% of a lithium battery in terms of the ultimate battery pack production price, and it's but 75% of a lithium battery in terms of the event of the merchandise . While NiMH has some regulatory and other development steps, it's still significantly but lithium 

Size: Lithium cells are lighter and smaller than Nickel Metal Hydride (NiMH) cells, however lithium cells only have a mean of 1500mAh compared to the 2200 mAH average of NiMH cells.

When a battery pack is installed, the battery type, cell numbers,dimension, and constrution part are determined by the application. Considerations include voltage and current; charging

specifications; available space and usage conditions. Cestpower designand manufacture the most common industrial applications in order to meet customers needs while maintaining safety, quality, and reliability

Do i Need BMS for NiMH Battery? No, it is not necessory, However, NiMH battery packs are the hardest batteries to be charged accurately and since the BMS is cost effective extremely we advise one in your pack, NiMH batteries charging is predicated on forcing current through the battery you'll control overcharge by just setting a maximum charge voltage. Therefore, having an electronic safety will increase the general lifetime of the battery.

If a NiMH battery be over charged for many times, micro crystals on electrode, inhibit the ability to fully charge, and as a result, the battery's voltage drop. Insufficient charging causes low energy while over charging causes short cycle life. this is why we use the cost effective BMS that manages the charging process to ensure the battery will never be overcharged or damaged.

Most low quality chargers use rudimentary timers instead of actively monitoring the voltage to work out when to decrease the charge current. Typically, a moderate rate 2h to 3h smart charger is preferred for NiMH batteries. fast charging (≤1h) can affect battery cycle life