Questions tagged [battery-balance]

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Nested load balancing

MOTIVATION I was helping my dad decide on batteries and a BMS for a photovoltaic system. He intended to combine 12 and 24 v batteries. I told him that is not advisable to mix batteries. But I got hung ...
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23 views

How to connect old and new BMS together on 10S5P Lithium Ion powerpack

I have configured 10S5P lithium power pack, because the old lithium batteries had almost no capacity. So I am having the following problem, the old BMS is a 8S BMS, because I have configured 10S ...
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3answers
60 views

Balance charge unknown number of LiPos in series

This exact question has already been asked here, but no answer was given so I'm reposting it. I want to charge an unknown number (between 1 and 8) of 1s LiPos in series with my balance charger (ISDT ...
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2answers
282 views

What should a 12v solar battery read while in use?

I have a 12v solar system with 2 12v batteries (One marine, other a car battery). My inverter has a minimum voltage input of 11.0v and peak of 15.0v, but when I'm running it under load, I get a ...
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36 views

How to make battery balance charger for two 18650 batteries?

I am on a collage project, it requiring two 18650 li ion batteries. boost converter and solenoid lock mechanism requires can't operated through a single battery, and there is no balance charging ...
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6answers
1k views

Is it possible for series connected battery cells to provide different currents?

I know current through series elements is always the same. I was wondering if the same is true for series supplies (batteries) or if it is possible for one supply to provide more or less current than ...
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2answers
472 views

Is it possible to charge a laptop with a DC-DC converter using a 12V deep cycle battery

Am just curious if I can use a DC-DC converter and 12v deep cycle battery to power a laptop directly.
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1answer
179 views

Individual cell balancing on multiple packs

UPDATED: I edited my question to clarify I'm building a 4s4p pack with 18650's. What is the best method to achieve on a per-cell balancing & protection if that makes sense? Most of the 4s BMS I ...
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1answer
101 views

Which cell balancing method is best to use and implement for low-voltage (48V battery stack) battery management system for E-bike application? [duplicate]

I would like to design a battery management system for low voltage systems. I am developing a BMS for a 48V, 20Ah battery pack system. When it comes to battery balancing, I am confused in between ...
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1answer
287 views

Identify chip on 2S BMS / Balance card

I picked up a bunch of Chinese-made 2S BMS / Balance boards. As is the norm with inexpensive Chinese boards, they came with essentially NO documentation aside from how to hook the board to the ...