Hi,
About to have to leave the above vehicle for several weeks and need the alarm to be active. Anyone know of any problem using a trickle charger to keep the battery topped up for anything up to 8 weeks? The output of the charger is 300mA.
Thanks
AC
Have you thought about a small solar panel??
Peter S
AC> Hi, About to have to leave the above vehicle for several weeks AC> and need the alarm to be active. Anyone know of any problem AC> using a trickle charger to keep the battery topped up for AC> anything up to 8 weeks? The output of the charger is 300mA.
Shouln't be an issue for a low current charger. There are warnings about using high power chargers, but this shouldn't cause a problem.
AndyC
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+-------------------------------------------------------------------------+ |Andy Cunningham aka AndyC the WB | andy -at- cunningham.me.uk | +-------------------------------------------------------------------------+ |I would agree with that.
The general rule of charging lead acid type of battery is that the main charge current shouldn't exceed about 20-25% of the rating of the battery.
eg, if a battery is rated at 10Ah, then the full charge current shouldn't exceed about 2Amps
The trickle charger should be fine as you describe to keep the battery topped up - a decent charger should whack the full charge current into it until it starts to get full and then back off to a trickle to keep it topped up.
Only thing i can think of is that for whatever reason the BeCM is woken up - then the car will start to draw off the battery - if your charger is connected - it might not like that. For example, if the system draws more than 300mA through the battery - would the charger handle it?
Don.
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