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Topic: Solar panel charger

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Grampian91

21/7/2016 at 1:30pm
Location: Midlands
Outfit: Mondeo Avondale Gram

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Quote: Originally posted by JTQU on 21/7/2016

No panel over about 10 Watts should be used without a controller whatever time of the year. It is not a case of getting more power from it but regulating things to get power only when needed otherwise the battery will be damaged.

Shhh dont tell anyone, but during the winter i would use a 25w panel without one, if the weather was quite bad with little light i may even goto 2 panels.

shh secret though and not recommended.

As you say a charge controller should be used, but with a small panel and inefficient controller it may cut the charge down to almost nothing.

I probably have a bit more kit to keep an eye on the charge / current / voltages than others though.

DaveCoaches

21/7/2016 at 6:13pm
Location: None Entered
Outfit: Coachman Pastiche

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Quote: Originally posted by kegonlegs on 20/7/2016
Hi peeps
whilst were on the subject
Ive just purchased a Hankook 90ah DC27 battery and have a 2.4v solar panel connected to it is that sufficient to keep it trickle charged?
regards
keg

To put this into perspective. In bright sunlight, this will put out 200 milliamps. That would take an hour to charge a rechargeable AAA battery, or over 5 hours to recharge the average smart phone.

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