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0 votes
3 answers
773 views

Battery Tester Circuit with 3 LEDS

I'm designing a small system that uses an ATMEGA328P and a LoRa module that runs on 3.3V using a AAA 1.5V battery. The battery is connected to a Boost Converter which steps up the 1.5V to 3.3V to ...
Max's user avatar
  • 557
0 votes
1 answer
173 views

Battery level on battery indicator drops when i connect a load? [closed]

I've got this cheap battery level indicator that has 4 battery level segments, it is connected to a 12V-18AH lead acid battery that I to charge my laptop and my 1W light bulb. I really can't seem to ...
Seraj's user avatar
  • 69
22 votes
3 answers
11k views

Low Battery Indicator

I'm looking to make a battery life indicator that I can use in conjunction with a micro-controller. I'm hoping that I can then read the current battery life remaining and increasingly put the micro-...
littlebirdceo's user avatar