1. BrMisha

    IC for measure voltage of cells of 30S li-ion

    Hi! I'm building li-ion battery 30S4P and i need an BMS for that (preffered with some wired interface to get voltage of every cell). There are some on ali (https://www.aliexpress.com/item/1005002502679730.html) with dimensions 180x110x10 but i'm using the Gainta G3028 box and there is free space...
  2. flasergames

    LiPo cell overdischarged (down to 0.7V) [charges just fine]

    Hello, I am currently re-purposing my old powerbank for a robotics project (BMS and LiPo will be integrated into a 3D printed case). The Powerbank (CellularLine FreePower Slim 5000) was unused for 7-8 months and while opening It, I measured the cell voltage, which turned out to be ~0.7 V...
  3. W

    Current Limiting Parallel BMS Systems in Solar Storage Application

    Hopefully this is an easy design question to answer. I'll start with some background information. The case is with lithium iron phosphate or LFP batteries that are "48 volts" used for household photovoltaic battery backup. There are many brands and there are different lithium chemistries, but we...
  4. M

    voltage subtractor

    i'm working on a arduino based BMS which have to measure voltage from a multicell battery which is connected in series. i can measure the voltage of the cells by individually grounding them. But what i want to achieve is to measure single cell battery voltage when they are connected in series. I...
  5. Dinesh6252

    Can i use a 13s bms for a 7s project? And how?

    I have a 13s bms laying around and I want to use it as a 7s bms, is there a way to do that?any suggestions would be greatly helpful.
  6. D

    Connecting 2P2S battery pack to BMS

    Hi All, I have four identical 18650 Li-ion batteries 3.7v \ 2500mAh and a BMS 2S. My goal is to get 5v (with step down) and more current capacity. so I though of connecting the batteries as 2P2S as battery university suggested. 2P because the Li-ion will balance themselves and for more...
  7. eliasklk_04


    Good night. I bought this flashlight for my bike: https://www.ebay.es/itm/Luces-Bicicleta-Luz-10000LM-Impermeable-3XT6-LED/292872854958?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 But the light that comes out seems very little to me. I think it has more potential. Could I modify...
  8. Carlosonline

    Li-Ion Battery Managment IC Issue

    Hi, I would appreciate if someone would be able to comment/advice on the following matter. I have been looking around for an IC that would charge and balance Li-Ion cells 2-3 of them in series. It seems that the balance feature is absent in most cases. MCP73841 appears to provide most of the...
  9. S

    Battery Management System (BMS) Reset

    After many months of not using my Asus EeePad TF101 I have turned it on by plugging in the charger. After the boot the battery was 0% and I wasn’t surprised about this as I have not used the tablet for many months. I tried to charge it like before but after few hours it was still 0%. I found...
  10. -live wire-

    Need help finding BMS for this lipo battery.

    Hi, I'm going to get this 4S 7AH lipo battery for an RC project. I need a BMS for it that prevents short circuits and overdischarge. All of the BMSs I can find have a cutoff voltage of 2.5V! This doesn't seem good, as isn't it supposed to cut off at 3V to be safe and maintain its capacity!? So...