BattGauge Battery Testers
A big problem we have every competition is managing batteries. It’s hard to juggle between which batteries are charged, and which are dead - meaning voltage is inconsistent between matches. We used a fast charger at our Canadian Premier Event in 2025 to combat this. However, this isn’t a sustainable solution as charging batteries faster can damage them. We designed a custom battery tester. It is easily connected to batteries, and flashes simple colors to indicate current voltage and internal resistance. This solution is much more affordable than commercial options, notably being 5 times less expensive than goBilda counterparts.
We hope to offer these to other teams in the future through online purchasing options or easy to assemble kits.
If you need to replace the case or firmware, you can download it here:
If you would like a replacement PCB, please email us.
Updating firmware requires a UPDI Friend from Adafruit, along with a SOIC-8 clip to hook on to the ATtiny412 chip. You will need to install the megaTinyCore package into Arduino IDE.
