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Adjusting charger voltage for temperature variation (lead acid batteries)
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I've been to this website before, but never really read through a lot of it. I came across this nugget this morning though. Something potentially useful for a lot of us now that we'll be seeing some colder weather.
Charging the lead-acid battery - batteryuniversity.com Quote:
For example, I believe my Schumacher 12V charger charges my Paseo battery at 14.5V. In summer I may want that to be lowered to lengthen battery life. However, in winter, it sounds like I should kick it up a little to give me a little extra capacity. I'm honestly not sure that the Schumacher has a temp sensor, or even adjustable voltage though. If you have an EV, I'd imagine this is much more important though. :) |
I'm not sure if my charger regulates voltage thresholds based on ambient temperature.
The only temp related function I know it has for sure is charger related: if the charger internals get too hot, it stops or reduces output until it cools down. |
According to the manual of my K&W BC-20 charger, it does have built-in temperature compensation.
The charger and batteries should be at the same temperature for it to work properly. The charger is mounted in the car, only a few feet from the batteries, so I don't see it as a problem. I may start doing some checks with a volt-meter and see how my resting charged voltages are compared to that chart. |
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