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The Comidox 3S 12V 10A Lithium Battery Protection Board is a compact, high-performance BMS module designed for 3-series 18650 or polymer lithium batteries. It safeguards your battery pack with multi-layer protections including overcharge, over-discharge, over-current, and short circuit, while supporting up to 10A discharge current and operating reliably across a wide temperature range. Ideal for professional DIYers and tech-savvy users upgrading 12V electronic devices, this module ensures safety, longevity, and efficiency in your power solutions.
| ASIN | B07J9NXQ6W |
| Best Sellers Rank | #193,130 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #791 in Power Converters |
| Brand | Comidox |
| Color | Black Blue |
| Customer Reviews | 4.1 out of 5 stars 237 Reviews |
| Input Voltage | 12 Volts |
| Item Dimensions | 1.97 x 5.91 x 3.94 inches |
| Item dimensions L x W x H | 1.97 x 5.91 x 3.94 inches |
| Manufacturer | Comidox |
| Mfr Part Number | CP219 |
| Model Number | CP219 |
| Output Voltage | 11.1 Volts |
| Plug Format | Type A, Type B |
| Plug Type | Type A, Type B |
| UPC | 661083377344 |
B**N
Works as advertised!
Works perfectly with my 21700 3s2p setup!
B**H
Apply charging voltage on your first use to work.
Worked wonders! Converted our nursing facilities feeding tube machines that works on 12v 2amp lead acid batteries to 18650 lithium batteries..bench tested for a week draining the diy battery pack and charging it back multiple times in the our baxter infusystem feeding tube machines before sending it back to the floor for patient use..5 done, 10 more units to go.. just do remember they need to be charged 1st before its going to work.. its for safety reason they did this for it to work the very first time..there will be no voltage outputted if you donโt charge this on your first use so be aware..
J**L
3s 12v 18650
build large 18650 charge blocks for off grid. i use these for cell phones and small fans and LED lamps. rated 12v10a is 120w max i guess. 3s8p 16AH 200WHR 18650. low amperage used 5v2a +9v1.5a + 12v1a. makes the kids happy when they have lamps and can charge their phones and tablets for days. 18650 BMS.
E**.
Did as described...Great!
No issues at all. Made 3 battery packs using 3, 18650 cells. These prevent overcharging, and shut down when voltage is low. Exactly what I needed. +++++
M**Y
DO NOT BUY
they are bad, all 3 out of the box are bad, charged with 12 volt in like its specified, and all 3 boards went up in smoke. literally. they look okay for quality, but they do not work.
F**O
Sometimes just blow up on testing.
One blew up immediately after i tried to discharge from it, i wired up another one the same way and it worked, it charges and discharges just fine, so far. Still kinda lame i payed for 3 and maybe only got 2 working ones, (i haven't tested the last one yet.)
C**Y
Exactly what i needed
I used this to build a battery it work right away one thing though it doesn't say this in the instructions it comes in a safety mode so you can connect the battery cells you MUST appy a charger to the finished battery to take it out of safety mode even just for a second you wont get an output until you do i see a bunch of people say it didnt work but you HAVE to charge it first
A**R
They work well, must charge to activate
They are good, work well and keep the pack hovering around 12.6. Must charge through circuit in order to activate.
Trustpilot
2 weeks ago
3 weeks ago