Hi,
I have a few devices which run off various batteries and I'm looking for some sort of protection.
The devices (environmental, machine, building monitoring devices etc) are being run from various batteries and I would like some advice on protecting the batteries from over discharge. As the batteries main purpose is to start a generator or keep alive critical electronics they will all put up with a certain amount of discharge before they become useless and require recharging (obviously dependent on the load requirements and battery technology!!)
So I'm looking for something that will disconnect the load when a pre-determined battery voltage is reached and then reconnect once a higher voltage is reached (when the battery has been recharged for example).
My initial thoughts were a battery management IC, but was not sure there was one which is programmable to cope with the different cut-off voltages, so wondered whether there was a microcontroller suitable? My main issue with this whether the power requirements of a microcontroller would further drain the battery considering it has to check the voltage periodically to see if the load can be reconnected...
Might be useful if there was a solution which re-charged the battery and re-connected the load when the battery input voltage is high enough but this is definitely int he realms of an IC and could not find anything combined.
Does anyone have any experience of this or can recommend any suitable component IC's?
Thanks