Charging questions

[TheNinj]

I've got a Mtroniks J4 peak delta charger. It has a switch that selects either 1A, 2A or 4A.

I have 4 batteries (stick packs) 2x 3600, 1x4000 and 1x4500 mAh.

I understand that you're supposed to charge your batteries at 1C which is fine for the 4000mAh battery because I can use the 4A switch.

But what about the other batteries? I've been charging them all at 4A. Is this correct? I've noticed that it takes a good few hours to charge, even the 3600's take about 2 hours at 4A.

Should I be charging them at a different rate? Shouldn't a 4000mAh take about 1 hour at 4A?

Have I been buggering up my batteries?

[darryl]

is your charger a pulse charger, not good for nimh batteries im afraid on a linear charger 4a is fine
hope this helps

[bigred5765]

im using a nosram stealth charger set to 4.5amp and its lowest rolover setting, are are taking 90mins from flat/equalised

[TheNinj]

Originally Posted by bigred5765

im using a nosram stealth charger set to 4.5amp and its lowest rolover setting, are are taking 90mins from flat/equalised

What mAh batteries are you charging @ 4.5amp?

[darryl]

its only a budget charger and delta peaks are normally pulse chargers im sure someone will correct me if im wrong

[Chris Harte]

To find out get a fan from maplins and stick it in, if its constant its a constant charger if it pulses then its a pulse charger :P

[TheNinj]

Originally Posted by darryl

its only a budget charger and delta peaks are normally pulse chargers im sure someone will correct me if im wrong

normally, how long should it take to charge a discharged (ran in the car until it stops) 3600mAh @ 4A? I would have thought it should take about 45 mins?

Mine takes a couple of hours... :\ That right?

[TheNinj]

how would I know if it was a pulse or linear? It's a Delta peak charger http://www.mtroniks.net/news.asp (Top of the page)

As far as I know it's designed for nimh and nicad batteries.

[Chequered Flag Racing]

Originally Posted by TheNinj

I've got a Mtroniks J4 peak delta charger. It has a switch that selects either 1A, 2A or 4A.

I have 4 batteries (stick packs) 2x 3600, 1x4000 and 1x4500 mAh.

I understand that you're supposed to charge your batteries at 1C which is fine for the 4000mAh battery because I can use the 4A switch.

But what about the other batteries? I've been charging them all at 4A. Is this correct? I've noticed that it takes a good few hours to charge, even the 3600's take about 2 hours at 4A.

Should I be charging them at a different rate? Shouldn't a 4000mAh take about 1 hour at 4A?

Have I been buggering up my batteries?

This one?



4 amps will be fine for all. Your only just over for the 3600's

Are you using it plugged into the 249v mains? That will explain the time to charge your 36's. It's 1.2amps if plugged into mains

Can you sellect NiCd or NiMh?

If you can set it to NiMh

Specs for charger are quoted as @ Midland Model Centre

J4 Fast Delta Peak RC Battery Charger AC/DC NiCd NiMh.

This Delta peak quick charger can be run from mains or DC (croc clips). Its small size make it a very convenient piece of equipment to have, varaible amps 1,2 or 4

Some specs below
Double AC/DC input
AC : Charges 4-8 cells @ 1.2A
DC : Charges 4-7 cells @ 1.2A or 4A
Controlled by an 8bit CPU
LED and audible indicators
Re-peak function
Polarity & short circuit protection