is this charger good for my batteries?

[FILIPPO]

I was wondering if my charger was is working any good with my batteries.
I tryed to find a review about it but....anything!
I bought it from a soft-air shop.
here you are some pics:

as you can see it has got two leds one green that is always on, and a orange one that is on when batteries are under charging and tuns off when charging is complete.

To keep batteries hot of the charger it also has got a trickle charge at 70mah (the normal charging current is 700mah)

Now what I need to charge: 9X2/3A abttery pack, and two Battery packs with 9 Elites 1700.


so, the final question is: will this charger "CooK" my batteries or just do his work?

thanks in advance!

 

[Mr Happy]

It looks like it would work, but with a caveat. When using a smart charger with -dV termination on a series pack with 9 cells it helps for the pack to be in a balanced state of charge before charging (otherwise individual cells will produce -dV at different times and the charger may have trouble detecting the signal). This could lead to missed termination and overcharge. To balance the pack a timed charge at a low current of about 200 mA for 12-15 hours is good, but this charger doesn't seem to offer that mode.

Therefore, if you have a charger like the C9000 it may be an idea to put each of the cells through a break-in charge before assembling the pack and to repeat the break-in charge every now and then afterwards. Maybe every 20 regular charges or so -- I'm not sure how often is best.

If you are not able to do that, then watch the charger when you first charge a pack and make sure the yellow light turns off at about the right time (after 3 hours or so). Then leave the pack on trickle charge for another 12 hours after the first charge to help it be fully balanced.

 

[FILIPPO]

It looks like it would work, but with a caveat. When using a smart charger with -dV termination on a series pack with 9 cells it helps for the pack to be in a balanced state of charge before charging (otherwise individual cells will produce -dV at different times and the charger may have trouble detecting the signal). This could lead to missed termination and overcharge. To balance the pack a timed charge at a low current of about 200 mA for 12-15 hours is good, but this charger doesn't seem to offer that mode.

Therefore, if you have a charger like the C9000 it may be an idea to put each of the cells through a break-in charge before assembling the pack and to repeat the break-in charge every now and then afterwards. Maybe every 20 regular charges or so -- I'm not sure how often is best.

If you are not able to do that, then watch the charger when you first charge a pack and make sure the yellow light turns off at about the right time (after 3 hours or so). Then leave the pack on trickle charge for another 12 hours after the first charge to help it be fully balanced.

thanks for your suggestions!
I have read on LuxLuthor battery pack sale thread that he condition battery pack before sending them out...
when they'll arrive i'll recharge them @ 700mah and then for 12hrs @ 70mah.
I hope this charger won't reduce life of my batteries..:thinking: I'm considering to get a better charger but its hard to find one in italy...

what about Triton?:candle:

 

[FILIPPO]

hi, I noticed that when "normal" charging is completed and batteries was being on trickle charge for about 1/2hr they are at about 1,44V....does this mean overcharge?

thanks!

 

[Mr Happy]

hi, I noticed that when "normal" charging is completed and batteries was being on trickle charge for about 1/2hr they are at about 1,44V....does this mean overcharge?

No, not necessarily. It depends on the cell, since different types of NiMH have different voltages.

For instance Eneloops typically go above 1.50 V when charging completes and hot off the charger may read about 1.49 V. If you leave them to rest they will drop to 1.44 V and then remain fairly stable at that voltage, while slowly declining over a period of weeks to go eventually below 1.40 V.

 

[FILIPPO]

No, not necessarily. It depends on the cell, since different types of NiMH have different voltages.

For instance Eneloops typically go above 1.50 V when charging completes and hot off the charger may read about 1.49 V. If you leave them to rest they will drop to 1.44 V and then remain fairly stable at that voltage, while slowly declining over a period of weeks to go eventually below 1.40 V.

thanks for your reply.

my batteries are Elite 1500 2/3A in a Luxluthor battery pack. I don't want to cook this beautiful battery pack...that's all..