Reddit reviews Galley Power LLC Low Voltage Battery Disconnect, 20A, 12V/24V Auto Detect
We found 3 Reddit comments about Galley Power LLC Low Voltage Battery Disconnect, 20A, 12V/24V Auto Detect. Here are the top ones, ranked by their Reddit score.
User selection for 8 disconnect threshold: 9.3~12.1V for 12V battery and 18.6~24.2V for 24V battery20A continuous current in full temperature range -40~130⁰F4.5mΩ ultra-low resistance: Less than 1/10 of power loss compared to competitorsAutomatic 12V/24V battery detectionLow current consumption: down to 0.26mA with 12V battery
You can wire in a low voltage cut off so it shuts off the electronics you're using before the battery drops to a point it won't start. You can also just pick up a jump box and bring it with you then either run the stuff off the jump box or use it to start your Jeep if the battery gets too low.
https://www.amazon.com/Voltage-Battery-Disconnect-Auto-Detect/dp/B0147DYUN8
https://www.amazon.com/SMAKN-Converter-Power-Supply-Module/dp/B00CXKBJI2
A better way? It depends. If your time is more important than the few bucks you'll save, then I would recommend using an off the shelf battery cutoff box like the ones at this link.
Otherwise, you can do it easily with an Arduino: it's a good learning project. Just use a latching relay like modoleinad suggests to reduce battery drain.