bms

We are designing a 16 cell BMS using TI's BQ76940 IC and we want to ask for a schematic review to catch anything that we missed. We are also using some DC-DC coverters so it'll be great if you can look at it at a system view. Please do let me know if you need any other information, I have...

Hi Guys, I'd like to start by telling I have gone through a lot of similar threads from allabout circuits but I have concluded my problem is little different from all of those. I have a battery charger circuit that will be powered by USB, which will charge a 3.7V Li-Po battery. My Requirement...

Problem: I have a 10s 36V li-ion battery pack powering my load (resistor used as example). When the charger is connected I would like the load to be cutoff as well as charge the battery. In my current set up I have the load being cut off when the charger is connected through the pmos but the...

Hi everyone! My friend and I are working on designing a battery pack for our e-bike and would love some advice and consultation from anyone with experience in this area. We’re pretty new to this and are still learning about the constraints, limitations, and what to consider in terms of design...

I'm putting together a 12V 4S3P battery system with (3) HXYP_4S_3828_BMS battery management system modules, each managing one of the three stacks. Can I safely tie the three stacks together at the 12V terminal? My concern is that there may be a slight voltage difference between the stacks. The...

Currently trying to get this board to simply supply me 5v through the USB terminals on the back. https://a.co/d/3mZtA3k I have the USB + and - hooked to a Wemos D1 Mini V4, and when I activate the KEY button on the charger board (with a battery powering the board), it flashes on for a moment...

I got an 8S 8P battery back and a BMS connected to it. The BMS is supposed to be compatible with 6S, 7S, 8S, 9S, 10S batteries and I was told by the manufacturer to short 2 pins together to get it to work with 8S batteries as shown in the following pictures. I checked all the connections...

Hello everyone, I am a senior engineering student whose graduation project is a Mars rover-style robot which is to be powered via an 8S8P Li Ion battery pack (33.6V 24Ah) that was assembled from these 18650 batteries. The battery pack is managed by this BMS (10Series 60Amps). Currently I am...

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...

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...

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...

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...

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.

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...

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...

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...

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...

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...