BG532314114
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BG532314114 25/11/2021
I like this BMS! It has LED's so you can see what cells are being "balanced " (bleeding of 50mA ? curent from the top charged cells ). The 3.2V version looks to be for Lithium iron phosphate (Li-Fe-Po4) cells, and the "3.7V" version is for Lithium ion (Li-ion) 4.2V cells. The lifepo4 3.2V version uses the BM3451- BHDC-T28A, and the Li-ion 3.7 (4.2V) version uses the BM3451 -SMDC-T28A chip. So you need to buy the right version that fits your needs/battery cells. the chip can also be used for 3S, 4S and 5S configuration. you just have to remove one or two 0-ohm resistors of you wanna use a 3S BMS for 5 cells. the PCB is good quality, but I haven't tested it under high current over time. The controller chip on one of my BMS was mounted outside it's footprint, so I had to heat it up and move it.. anyways.. this BMS is sofar my favorite when it comes to tiny BMS'es.
3S 4S 5S Bms 12v 16,8V 21V 3,7V 100A Li-ion Lmo тернарный литий-ионный аккумуляторная плата схема защиты Li-polimer Балансное зарядное устройство
US$8.99 US$14.99
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BG532314114 25/11/2021
Did a simple test to see if these boards have the fake AO4407 P- channel (SOP8) MOS-FET's as the ones I got from ebay. looks like these have good Fet's with low internal (drain- source ) resistance (RDS). it's nice not having to swap out the MOS-FET packs on a new BMS 🙂👍. I'm running ~30 watts trough the FET's and they are cold (been running for 30 min) The test load is some old 12V to 240V inverter that pulls too much in-rush current for the "eBay" BMS moduleswith the "fake" 4407 FET's , so the BMS enters shutdown mode. I know my wires aren't actually super conductors, but I did the same test with the ebay modules with the fake 4407 Fet's. I'm happy with this product. A tiny BMS that can handle high current : 3A-4A continously and 10A peak (with good wires).
5 шт 3S 12В 18650 10A BMS Зарядное устройство для литий-ионных аккумуляторов Плата защиты батареи Цепная плата 10,8В 11,1В 12,6В
US$12.99 US$15.99
0
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BG532314114 Remove the 0-Ohm resistor between B1 and B2, then you get 4S.

Tumevaan 25/08/2021
ordered 4s type, got 3s :(
3S 4S 5S Bms 12v 16,8V 21V 3,7V 100A Li-ion Lmo тернарный литий-ионный аккумуляторная плата схема защиты Li-polimer Балансное зарядное устройство
US$8.99 US$14.99
0
Комментарии (2)

BG532314114 They are all 5S to 3S. Remove the 0-ohm resistor between the B1 and B2 pad, then you got a 4S. if you also remove the 0-ohm resistor (jumper) between B- and B1 you got a 5S BMS.

cnobile 10/08/2021
The lower price was very welcomed however this is the 2nd time I've ordered a four-cell version and got a three-cell version.
3S 4S 5S Bms 12v 16,8V 21V 3,7V 100A Li-ion Lmo тернарный литий-ионный аккумуляторная плата схема защиты Li-polimer Балансное зарядное устройство
US$8.99 US$14.99
0
Комментарии (1)

BG532314114 That was good service. Those resistors are only current sensing shunts, they are all in parallel. Even if it maybe doesn't look that nice, it has nothing to say for the performance. if that was bothering me, I would have moved em with my soldering iron while soldering the wires to the bms. Btw: looks like they did some modification to the PCB I got (sepatate pads with silkscreen) so the resistors won't shift a few 0.x mm during baking.

pavels 31/10/2021
Když jsem modul prohlédl všiml jsem si že je špatně připájená součástka. Poslal jsem foto na servis BG a oni mi pošlou novou desku. Děkuji Banggoog za snadné vyřešení reklamace.
3S 4S 5S Bms 12v 16,8V 21V 3,7V 100A Li-ion Lmo тернарный литий-ионный аккумуляторная плата схема защиты Li-polimer Балансное зарядное устройство
US$8.99 US$14.99
1
Комментарии (2)
BG532314114 23/11/2021
super fun tiny oscilloscope
Набор для производства осциллографа STC8 с ЖК-экраном Мини-осциллограф Электронный комплект для самостоятельной сборки Части для электронной сварки
US$14.99 US$17.99
0
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