Battery charger problems

[JamesDavies]

Plugging our 24v battery charger (which we've not used in a while) into our shiny new batteries it managed to charge the two 12V batteries up to 26.2 V (in total). Even then it didn't cut out. Is this a problem? Do we need a new battery charger? Or am I being a noob...
Thanks,
James

[blazerbotics]

Re: Battery charger problems

what battery charger is it, with what batteries?

[terry]

Re: Battery charger problems

I'm sure from memory a 12v sla goes up to 13.8 or 14.8v when charging so your 26.2 not finished was fine, Google it.

[JamesDavies]

Re: Battery charger problems

Using this charger http://www.fightingrobots.co.uk/phpbb3/ ... &mode=view Think I bought it off you a while ago Terry....

They are 12v sla's from pure drive... Any thoughts?

[blazerbotics]

Re: Battery charger problems

how long had you left them charging? What size batteries are they?

[JamesDavies]

Re: Battery charger problems

This http://www.puredrivebatteries.co.uk/gol ... eries.html
They were only slightly discharged when we started, I just wanted to check the charger worked.... I left them about 5 mins.

[terry]

Re: Battery charger problems

Wow I remember that, sold it ages ago when I went to nicd I'm sure it is 5amps but will go down and slow charge so it will take a long time, I used to measure the charge amps and used to go down to around 1/2amp after a while. What is the ampage capacity of the sla's ?

[blazerbotics]

Re: Battery charger problems

Give it an hour or so, see if the charger switchs to float.

[JamesDavies]

Re: Battery charger problems

Okay, if we leave it an hour or so is there any risk of damaging the batteries?

[terry]

Re: Battery charger problems

Stick an ampmeter between the battery and charger whilst charging its propably less than 0.5 amps then let us know, I'm sure its so low and not sufficient to damage.

[JamesDavies]

Re: Battery charger problems

I'll try that and get back to you Thanks

[JamesDavies]

Re: Battery charger problems

Just wanted to check this before I did it (I'm a noob and I've been scarred by 4QDs exploding randomly in my face before). The charger attaches to the battery by an Anderson connector, should I disconnect the Anderson, join one side with a wire, then the other side with the multimeter? Just thought I'd best be sure before I ruin everything...

[terry]

Re: Battery charger problems

Yep, if I can understand what you meant, the ampmeter will go in line with the positive or negative wire, you could just pop one of the metal clips our of 1 Anderson so there is 2ends left, then put the 2 ampmeter wires to them.

[JamesDavies]

Re: Battery charger problems

Like this: Battery on the left, charger anderson on right.

[JamesDavies]

Re: Battery charger problems

(forgot to attach the pic )