How to limit solar charger current

Shreya shah's picture

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Joined: May 03, 2021

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How to limit solar charger current
May 3, 2021 - 4:40pm

I have 6 amp solar charger .I want to limit its current to 2 amp is it possible?iF yes what circuit i need to apply?

Sourav Gupta's picture

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Joined: Feb 12, 2018

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If the load consume 2 Amp of curren the solar panel provide that. Otherwise you need a Constant current circuit that will limit the input solar charger input to 2 Amps.

Shreya shah's picture

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Joined: May 03, 2021

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If the load consume 2 Amp of curren the solar panel provide that. => what about source?

Let me reframe query

At any instance lead acid SMF Battery can accept up to maximum 20% of current capacity. For 12V/26AH battery, it will be 5.2AH.Solar battery charger can pass upto 6A current as per its specification. Take a case where we connected 12V/40Watt solar panel (which can give Max. 2.66A current) and 12V/26AH Lead Acid SMF Battery to solar battery charger. Do you think that any time solar panel may get damage due to excess current (>2.66A) requirement by battery? If yes, what we need to protect solar panel in such condition?

Sourav Gupta's picture

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Joined: Feb 12, 2018

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No. It will not get damaged but it will provide nothing at all. Every solar panel has a continuous and shortcircuit current. In such case the load current cross the short circuit current limit and it will produce 0 Volt.