Your cart is empty.
Your cart is empty. Battery pack display electricity quantity parameter:
1.When battery voltage is over N*3.3V,it will illuminate 1 block electricity quantity (note:N represents battery quantity)
2.When battery voltage is over N*3.5V,it will illuminate 2 blocks electricity quantity
3.When battery voltage is over N*3.7V,it will illuminate 3 blocks electricity quantity
4.When battery voltage is over N*3.9V,it will illuminate 4 blocks electricity quantity
5.When battery voltage is less than N*3.3V,4 blocks display will be off;it represents battery is less than 3.3V,and you can charge the battery
Battery description:
4V lead acid voltage range:
Battery voltage＞3.3V, bright 1 grid
Battery voltage＞3.5V, bright 2 grid
Battery voltage＞3.7V, bright 3 grid
Battery voltage＞3.9V, bright 4 grid
6V lead-acid voltage: (you can use 2 strings of lithium iron phosphate battery)
Battery voltage＞5.6V, bright 1 grid
Battery voltage＞5.9V, bright 2 grid
Battery voltage＞6.2V, bright 3 grid
Battery voltage＞6.6V, bright 4 grid
12V lead acid voltage range: (4 series of lithium iron phosphate batteries can be used)
Battery voltage＞11.0V, bright 1 grid
Battery voltage＞11.8V, bright 2 grid
Battery voltage＞12.3V, bright 3 grid
Battery voltage＞13.1V, bright 4 grid
24V lead-acid voltage range: (8-series lithium iron phosphate battery can be used)
Battery voltage＞22.3V, bright 1 grid
Battery voltage＞23.5V, bright 2 grid
Battery voltage＞24.7V,bright 3 grid
Battery voltage＞26.3V, bright 4 grid
Package includes:
4 X 2S Battery capacity module
Dave Whittaker
Reviewed in the United States on May 4, 2025
Received these today. 3 out of 4 worked normally. One of them wouldn't illuminate the lowest bar. I couldn't find a way to contact the seller to get it replaced, and it didn't seem worth returning all of them for just one bad item. I wish there was an option to contact the seller directly. If it's there I'm unable to find it.
Robert B
Reviewed in the United States on June 1, 2024
I thought maybe the 4 bars would go out as the voltage decreased until less than 25% and the red outline of the battery would come on but the red outline is always lit. The lights are bright but have a slightly cheap feeling but for less than $2 a pop it isn’t all that bad.
Isaac D. Peterson
Reviewed in the United States on February 5, 2024
I like to build raspberry pi systems but I'm not the best at coding. I tried an adafruit battery meter but didn't realize their jst plugs are wired backwards to most lithium batteries so I accidentally burned the chip. After spending 45 dollars on adafruit stuff and wrecking it I didn't have the heart to order another one, so I just ordered these. I wired it directly into my power delivery wires and added a momentary button. It gives me battery level at a glance without powering on the system. It takes a while to learn how to read it within your system, for instance I am using a 10,000 mah lipo and the battery level will read (2) when the output drops below what the pi can use, but this is probably just the pi's power draw not a limit of the indicator. I have fully drained the battery and seen the indicator show 1 unit and zero and I believe it is accurate, but in my application the battery has to be at 2 or above to power the computer. anyways it was awesome to find a simple solution like this instead of relying on expensive specialty chips that require a lot of code. I love that I can glance at the power level without powering on the computer.
mintyyqueen
Reviewed in the United States on June 17, 2023
I used this as a battery meter for a project. Bright LEDs and easy to wire. 5 stars
Dave
Reviewed in the United States on February 17, 2021
Works OK, but no instructions. I wanted to know more, so I measured the current draw and found it to be 35mA, which is very high for a battery checker. If you leave it turned on, it will drain the battery. So, you need to use a push button switch to momentarily check battery level. I think the LEDs are much too bright, adding to the current draw. There are two PCB pads labeled "switch", what are they for? They are not for the switch I suggest, because it works without connecting those two pads.
Bruce
Reviewed in the United States on February 24, 2020
Works at intended and very bright. I took off 1 star because of miss-leading picture described that this 3s unit can measure 1s. It DOES NOT work with 1s. Plus, on 3s units that I received, there are six holes of (+) and (-) combined in which 2 holes are not labeled and other 4 do. I've tried different combination but it does not work with 1s. Only the parameter lighted up red, no indicator bars shows. Again, seller should delete that picture that shows it can measure 1s or 3s to avoid miss-leading for other customers in the future.
Edward
Reviewed in the United States on December 14, 2020
Very Good Deal
Ernie bean jr
Reviewed in the United States on April 26, 2020
Showed full charge up o the second the batteries died
Recommended Products
