Author name: Jessica Liu

I have some questions about BMS and battery configuration. As far as I know, if you want to create a 12-volt battery, you need a 4s BMS, a 24-volt battery requires an 8s BMS, and a 48-volt battery requires a 16s BMS. Is this correct? If I want to change my 4 batteries to a 4s/4p configuration, do I still need a 4s BMS? If I decide to change it into a 24-volt system in the future, would it be possible to purchase an 8s BMS and disregard the last 4 wires? Or do you have to buy a new BMS every time you make a battery configuration change (which can quickly become expensive), or increase battery capacity/voltage? Also, what is the 7s configuration?

My e-bike BMS failed, and I bought a new one. How should I install it?

My e-bike battery failed due to overcurrent protection. Is it possible to save the BMS?

I bought a 1S BMS that is not so expensive. Can it be used to monitor a parallel circuit composed of four lithium-ion batteries?

I want to install a smart home controller on the wall of the tablet, because this is a cheap and not very strong structure, I do not trust the lithium battery, and through the back of the power supply, I can make the appearance more tidy. So, I’m going to remove the battery.

I assembled a lead-acid battery pack with six cells. Is it possible to install a BMS on a lead-acid battery?

A few months ago, my e-bike battery couldn’t keep charging and couldn’t accept a charge from the charger. How should I test whether it is the BMS or the charging system that is faulty?

I have a device that runs on lithium-ion batteries. The device already has a charging circuit. The maximum load capacity is 300 mA, and the maximum charging current reaches 500 mA. To sum up, if there are 3 batteries in parallel (1 s3p), do I need to install a BMS or any additional protection circuit?

I am upgrading the battery system in my power wheelchair and have selected an 8S 24V 100AH BMS. If I pull a 140-amp load momentarily through the Ultra 100A BMS, will it see it as a short circuit and shut down? Would this be something I have not considered? If so, what would be the best solution—to bypass the BMS and pull the load directly from the battery pack? Or get a larger BMS?

If I have two separate lithium-ion battery packs in series, should I install a BMS for each pack or just one?