SparkFun Forums

[newbiebot]

Hi,
I got a new battery for my outdoor robot:
12 Volt 7 Amp Hour Sealed Lead Acid Battery

If needed a link to Amazon:
http://www.amazon.com/Volt-Hour-Sealed- ... B005IGR608

I have an adapter of 12v @ 500ma, so as long as I understand I have to keep it a 14 hour to fully charge, correct?

7000ma / (500mp/1h) = 14h.

Now what are best practices to charge it:
1. wait for the battery to drop under a specific voltage then start charging?
2. how to know if it is fully charged? only by measuring on 14 hour?
3. any other best practices I must know for an acid battery please?

Thank you.

[leon_heller]

Lead-acid batteries need to be charged at something like 13.6V (float charge). Full details should be in the battery spec.

[newbiebot]

unfortunately, nothing given with the battery, that's why I'm asking on forum, perhaps someone could kindly point to a best-practices page for charging such batteries

[jremington]

Google "charging lead acid batteries" for 1.4 million results

[skimask]

Turn your safe search off.
I got 6.84 million results!

[jremington]

Turn your safe search off.

And let the kids see a naked lead-acid battery in a compromising position?

[Mee_n_Mac]

I'd say the potential for the kids to see anything shocking is low.

[leon_heller]

This Yuasa doc has everything you need for charging their batteries: Manuel_technique_NP_anglais.pdf

I found it on their web site. It's actually written in English.