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Battery charging question

bertus

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Nov 8, 2019
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Hello,

I do not read french, but it looks like a SLA battery.
Use a charger specialy made for SLA batteries, to avoid over pressure.

Bertus
 

Goldhelmeth

Apr 8, 2020
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If I understand correcly SLA and VRLA batteries are the same right ? To be fair the price hurts a bit ... Would this do ?
 

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WHONOES

May 20, 2017
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No. The charge current is to high for your sealed lead acid battery. It should be charged at a current of not more than 25% of capacity. You also need a charger that starts in constant in current mode and then switches to constant voltage mode when the charge current dips below the level set for the constant current mode and then either switches to maintenance mode or switches off when the battery is fully charged.
 

bertus

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Goldhelmeth

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I see... It is more complicated than what I thought it would be.... Still do you think the charger you mentionned earlier will do ? It is one amp
 

WHONOES

May 20, 2017
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Hello,

It looks like that the mentioned charger is to strong for your battery.
Read the following pages of the battery academy about the battery and charging methods:
https://batteryuniversity.com/index.php/learn/article/lead_based_batteries
https://batteryuniversity.com/learn/article/charging_the_lead_acid_battery

They recommend a maximum charging current of about 0.1 C , that is about 700 mA for your battery.

Bertus
Sorry, but your quote of the charge current is not strictly correct.

See the attached link for a more comprehensive description for charging SLA's particularly page 4 about 2/3 of the way down.

https://www.silvertel.com/images/technical-articles/charging_sealed_lead_acid_batteries.pdf
 
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