pro peak constellation charger

[Danjr1]

Ive just finished building my 12v 3800mah battery from 1.2v sub-c cells but the instructions with this charger are a bit confusing. anyone know what they are doing with one of these? the help would be much appreciated!

[razerdave]

Re: pro peak constellation charger

Ok, I can help you out with this: For basic charging, do as follows:

You should have a screen that has battery type, number of cells and amp rating. Press 'Setup', and Battery type should start flashing. Press up and down to select battery chemistry, and press setup again to move to the next one and change that to suit.

Press down, and you should have a screen marked charge mode. The details you put in before should be there. Press setup again, and you can select the rate of charge, and press setup again to exit. Once you have the battery details and charge rate done, connect the battery and hit enter, and charge mode will start. It'll beep when its done.

[Danjr1]

Re: pro peak constellation charger

im using the automatic settings at the mo to go through a few cycles.

[Danjr1]

Re: pro peak constellation charger

dave, dont suppose you could tell me the settings i need to input for a 12v 3800Mah 12 cell battery? i just cant get along with the thing!

[razerdave]

Re: pro peak constellation charger

Hey Dan

The description in my first post should have produced the desired result and have your settings ready for charge, Whats the problem exactly ? Drop me an e-mail and I can probably talk it over on the phone or something if you are having problems still.

[Danjr1]

Re: pro peak constellation charger

i got most of it. what charge and discharge rates do i need for it?

[razerdave]

Re: pro peak constellation charger

I charge my 3300mA packs on a fast charge of 3A, but for a slow charge, anywhere between 1.5-2A. for a 3800mA pack, 3A will be a good quick charge rate. As for discharge rate, I've never actually done it to my own batteries, but I wouldn't discharge them at more than 2A.

[Danjr1]

Re: pro peak constellation charger

whats the 5mV/C bit on the charge screen? and im guessing the ....V/cell means the voltage of each cell (being 1.2v)?

[razerdave]

Re: pro peak constellation charger

I beleive thats to what tolerance you want each cell charged at. I've never changed it, and not had any problems, so

[Danjr1]

Re: pro peak constellation charger

ok, ill have a go. im using 16 swg wire, that ok? sorry about all the questions, im ok with the mechanical engineering side but electronics is not exactly my speciality!

[Danjr1]

Re: pro peak constellation charger

just finished charging but it finished at 2300mAh and the voltage dropped rapidly once the charging had finished? is the battery no good?

[razerdave]

Re: pro peak constellation charger

No it does that, the battery voltage is high as its putting the current in, the voltage levels out at near its stated voltage afterwards (my 18v pack usually peaks at 24v but after the beep reads about 19.5v.

[Danjr1]

Re: pro peak constellation charger

how about the capacity? it seems to lack 1500mAh?!

[razerdave]

Re: pro peak constellation charger

I think thats probably telling you how much its put into it to make it funny charged, the packs had charge in them already

[Danjr1]

Re: pro peak constellation charger

problem. the charger was charging and discharging the battery fine but recently when charging in Nimh automatic mode (which is what ive always used) its stopping charging for no reason and making no noise to say theres been an issue? my power supply is 3amps and at times, the charger can draw up to 3.5 amps from it so my guess is that the power supply is momentarily tripping out and stopping the charge?