Can a leisure battery be left flat for weeks?
I remember that car batterys die after a few days below 11 volts.
I want to connect one to a solar panel and wind charger and leave it for a few weeks in a field with people who may flatten it trying t6o charge their phones and laptops etc.
No. It will kill it.
so is there a cheap electrtonic relay-ish- thingy which would turn off output power once its down to, say 11 volts?
and what is it called!
[g]
I'd call it a low battery alarm.
The output should drive the "set" coil of one of these with no major problems:-
There'll be a small parasitic current from the alarm all the time, which may or may not be a problem.
+0100, george - dicegeorge
low Voltage Disconnect, LVD , but its a feature of solar charge controllers anyway, first one up on ebay:
Leaving it at 11V for any length of time would bugger it. How about using half the capacity, but in nicads?
Bill
+0100, george - dicegeorge
Thanks. The solar charge regulator I have is from 1995 and hasnt got a separate output for the load, [g]
Of course it will. Maybe you need to camouflage it... Brian
george - dicegeorge wrote on Jul 14, 2012:
There are several devices designed for running things like portable fridges from car batteries. They all use the standard 12V cigarette lighter plugs and sockets. Here are three:
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