OK this isn't strictly a pedelec question but it's something that has been asked on here before, I'm just putting it a different way.
My car is rarely used and the battery doesn't have time to recharge when I use it, yesterday it wouldn't start.
I have a nice expensive battery charger but it's a touch too high voltage at 42.5 with no load, it also won't cut out properly as it's for a LiPo battery.
I know that with a 4A 12V charger my battery will take about 24 hours to charge so I'm not really worried about having an auto cutoff, I'll just stick it on for a few hours. Knowing that a flat lead acid battery presents very little resistance I presume that connecting my charger direct to the car battery will damage something (even if it's just a fuse). So I had a look and wondered if this would do the trick to control current and voltage being fed to my car battery.
L200C Adjustable Voltage and Current Regulator : Voltage Regulators : Maplin
The max continuous input for these is 40V, will the extra 2.5V on no load work OK with it? The max output is 2A, how would two in parallel work?
Any thoughts on making this work, I don't really want to spend £40+ for what is probably a one off use.
My car is rarely used and the battery doesn't have time to recharge when I use it, yesterday it wouldn't start.
I have a nice expensive battery charger but it's a touch too high voltage at 42.5 with no load, it also won't cut out properly as it's for a LiPo battery.
I know that with a 4A 12V charger my battery will take about 24 hours to charge so I'm not really worried about having an auto cutoff, I'll just stick it on for a few hours. Knowing that a flat lead acid battery presents very little resistance I presume that connecting my charger direct to the car battery will damage something (even if it's just a fuse). So I had a look and wondered if this would do the trick to control current and voltage being fed to my car battery.
L200C Adjustable Voltage and Current Regulator : Voltage Regulators : Maplin
The max continuous input for these is 40V, will the extra 2.5V on no load work OK with it? The max output is 2A, how would two in parallel work?
Any thoughts on making this work, I don't really want to spend £40+ for what is probably a one off use.