is this charger enough

[loser]

i got this charger 6 years old. i think it came with 1800mah batteries.

those batteries died recently so i got some 2600mah. i don't know if this charger can charge my 2600mah?

 

[VidPro]

looks like, 2x seires slow charger, probably with timed cutoff and max possible capacities.
its not a "seperated channel" charger, so Team batteries in it would prefer to be matched (as opposed to completly differently discharged)
it does stay within .1C charge rate for slow charging.

it might timeout before full charge for 2600s, if a person used this to top off a "SET" of 2 or 4 cells that were 50% discharged, kinda like a consumer might, it would work ok.

it is unlikly to destroy a set of 2600ma cells, it can potentially slow balance out cells that were offset in charge capacity. It could overcharge , but well within spec, it could stop charging (timed) before you fully charged a fully drained 2600.

umm yes it could charge your cells. it can do that.


a search for its specs shows this
Mfg. - GP
Mfg. # - GPKB34P
Simple easy-to-use. Charges
four "AA" or "AAA" batteries.
Designed to charge either
NiMH or NiCad batteries.
LED indicates status of
batteries either charging or
ready-to-use. Black plastic
case. Plugs into wall outlet.
NiMH Batteries Charging Time:
(AA) 700-950 mAh, 3-1/2 to 4-1/2 Hrs.
(AAA) 450 mAh, 2-1/2 Hrs.
NiCAD Batteries Charging Time:
(AA) 700-950 mAh, 3-1/2 to 4-1/2 Hrs.
(AAA) 220 mAh, 2-1/2 Hrs.

which does not corelate with the specs show on the picture there on the back of your charger.

so the data sheet for it is about here somewhere
http://www.gppowerbank.co.uk/docs/PowerBank Specifications without banner.pdf
(not comming up yet)

 

[VidPro]

ok i found the elusive PDA file spec sheet, just had to change the address a bit
http://www.gppowerbank.co.uk/docs/PowerBank%20Specifications.pdf

indicates there exactally what it says on your charger.
(they used to call these "fast chargers"

it would be a slow charger, termination TIMER, as indicated on the sheet.

 

[loser]

it's not slow, it takes about 5 hours not 8 hours as the pdf file says. it's a timed charger and so i think i doesn't fully charge my 2600mah?

to fully charge any battery is to get a charger with detection system?

 

[VidPro]

potentially you could pull the batteries off that charger, wait 1/2 hour, then put them back on, to fully charge beyond the capacity it will charge to, because it times out.

Yes it is very common now to have chargers that full charge the cell, push it into overcharge, and stop as soon as they can determine it's in overcharge.
most of them still used TIMED as a safety measure, so if somehow capacity increases 2X again, they will not be usefull for the battery technology.

and that is likly what you have here, the device was created when the max capacity was 1300-1800 or so, and it times out. todays devices would not time out so quickly. so todays technology will work for today, and yesterdays worked for yesterday, and potentially a manual messing with it can still make it fully usable.

a "fast" charge nowdays is 2 hours or less, how "Time"s have changed

 

[loser]

is it bad to charge the battery when it's half way full, although NiMH doesn't have "memory effect". it's better when it's more discharge?

and also is it bad to put NiMH in clock cause clock uses very few battery and cause polarlity reverse when the battery runs out at the end and kill the battery?

 

[loser]

i wonder do low self discharge have reverse polarlity effect when it's fully discharged?

 

[VidPro]

is it bad to charge the battery when it's half way full, although NiMH doesn't have "memory effect". it's better when it's more discharge?

and also is it bad to put NiMH in clock cause clock uses very few battery and cause polarlity reverse when the battery runs out at the end and kill the battery?

nimhy is totally ok with being short cycled, being used a bit then re-topped off.
every once in a while it would also like to be mostly discharged AS LONG AS you did not reverse charge it.
because you cant control depth of discharge in a device, any purposfull deep discharge is best done on a charger thing, or controlled way, not in series with a bunch of other cells.

nimhy isn't put into clocks and backups and thermostats usually because it self discharges faster than the low consuming device uses it. and the nimhy likes being used (just not abused). LSD ni-mhys might change that, depending on how they self discharge with tiny loads.

if the device uses a SINGLE ni-mhy battery then the slow device could completly deplete the cell to 0, i do not know the damage done then, but if its recharged immediatally it shouldnt have to much trouble with it. luckily most stuff will stop working before 0.

if the device has multiple series cells, then it could possibly get a reverse charge when one cell goes to 0.

-----0v----1.1v--------------------
many devices would quit operating before that time. stuff like incadescents will go allll the way without stopping.

in low draw items a reverse charge might not be as severe as in a higher drawing item. the quantity of reverse charge and rate of it counts.

i should point out that when i put ni-mhys into things that VERY slowly depleate them, like thermostats and clocks, they did not work very well at all, they didnt like something about it. it was hard to tell because so much time passed, but after a few years of being in the very slow stuff, the capacity was poor. they made few cycles over much time.

 

[VidPro]

i wonder do low self discharge have reverse polarlity effect when it's fully discharged?

Me too. lower capacity ni-cd cells handled reverse better.

when all the batteries being used in series stop pumping out the juice at the same time, you dont have an inbalance and the high battery does not reverse charge the dead one.
because LSD can BE at near the same capacity over time a bit better, they go down more in unison over time. just because they arent slopily at different capacities from self discharge.

i dont know how well they will stay in unison over time, my AAAs are falling away from each other a bit, the AAs are still very well matched, in capacity and capacity over time.

if everything works perfectally (like in Eureka the cells all going down in unison are less likly to hurt eachother when in series.

 

[loser]

i should point out that when i put ni-mhys into things that VERY slowly depleate them, like thermostats and clocks, they did not work very well at all, they didnt like something about it. it was hard to tell because so much time passed, but after a few years of being in the very slow stuff, the capacity was poor. they made few cycles over much time.

is there any way to get the battery back to normal capacity?

 

[VidPro]

is there any way to get the battery back to normal capacity?

i thought it was becuse they just had not been cycled, so i cycled them, and some of thier "vibrance" came back.
so some of it was because it didnt get any normal cycling.

i could not get it fully back to original capacity, i dont know if there is a way, or if the test even provved anything because during the TIME all the technology had changed again. so the batteries were obsolete anyway

if the device only uses a battery every 6months to a year, a ni-mhy isnt going to get 1000 cycles on it till a few centuries pass, me gonna be dead before i will know

what is the payback time of a 5x cost cell going into a device that will use a cell a year, only 5 years. hmmm so maby i SHOULD put the enloops into the slow things and see what happens.

 

[loser]

thanks, you are the only one replying me