back to 12 volt DC

deep discharge protection:


There's often a risk of deeply discharging (and damaging or destroying) a battery when a load may be
accidentally left connected for an extended time without sufficiently recharging. To protect the battery,
you can install some device that will disconnect any attached loads if the battery reaches a preset low
voltage point. Now when the loads are disconnected, the battery is going to recover some of its voltage,
and you don't want the load to just get immediately reconnected, so these devices need to have some
"heuristics" / "hysteresis" to them, so they disconnect at a low voltage, but then only reconnect the battery
after it has raised its voltage to a higher level that indicates it has some amount of charge. For example,
a flooded lead acid battery can run all the way down to 10.8 volts, but should probably only reconnect
the load after it's returned to 12.0 volts, which will require it to get at least partly recharged.



charge guard


XH-M609



last updated 05/16/2025 at 18:59:11 by make_www_index.command version 2025.05.13.A