12V lead acid battery

[LouisLLH]

Hi, i would like to know the 12V lead acid battery cannot go below how many volt?

Normally one full charge 12V lead acid battery can charge up to how many lipo batteries??

Thanks in advance.

[jansonfinn]

Normally one full charge 12V lead acid battery can charge up to how many lipo batteries??

Thanks in advance.

Depends on how much mah ur lead acid batt have?

[LouisLLH]

mah?? my lead acid battery is 12V, 7.2Ah.

[LouisLLH]

im using emax balancer charger on the 12V lead acid, charge 3s and 2s lipo.

[jansonfinn]

mah?? my lead acid battery is 12V, 7.2Ah.

oppps, my bad, u r rite, should be Ah.

[LouisLLH]

its okay.

so 12V lead acid cant go below how many volt??

charge ard how many lipo, 3s and 2s??

[intrance]

its okay.

so 12V lead acid cant go below how many volt??

charge ard how many lipo, 3s and 2s??

interested to know too..

how many stick pack batts, say 2000mah 7.2v, can this 12V battery charge..

can anyone enlighten us pls...

many thanks in advance...

[Crabby]

Sorry HIJack ur thread abit... anyone knows where to get a reasonable price for 12V lead acid? Mine's gone case liaoz bought from Rotor few years back but Rotor quite exp...

[zattan22]

its okay.

so 12V lead acid cant go below how many volt??

charge ard how many lipo, 3s and 2s??

dun worry.....
i have tried to charge 3 x 3s lipo before...during field
the 12v lead acid still going strong..
i think 5 x 3s lipo is possible..

[zattan22]

Sorry HIJack ur thread abit... anyone knows where to get a reasonable price for 12V lead acid? Mine's gone case liaoz bought from Rotor few years back but Rotor quite exp...

i think sim lin tower have many shops selling.......
u can try...

[LouisLLH]

dun worry.....
i have tried to charge 3 x 3s lipo before...during field
the 12v lead acid still going strong..
i think 5 x 3s lipo is possible..

Hi zattan22, how u charge so many batteries at a time?? Wad charger are u using??

[nic]

A fully charge 7.2Ah batt can approximately charge 3+ *empty* 2000mAh LiPo as their voltage is almost the same. (11.1V vs 12V)

if your LiPos are half used, and only need to top up 1000mAh each time, you can top up maybe 6-7 batts.

What 7.2Ah means, is the gel cell can supply 7.2A for up to 1 hour.
So, if your charger took 60 minutes to charge 2000mAh at 1C, it would have use at least 2Ah of it rated 7.2Ah capacity.

In short, it all depends on how much you drain your LiPos, and how much power is needed from the Gel cell to top it up. (Power = Voltage x Current).

It is not good to overcharge a Gel cell, neither is it good to have a prolonged undercharge gel cell. Both will damage it.

[intrance]

nic..

great info.. many thanks..

i assume.. the calculation will be the same, to nicd and nimh batts?

TIA

[nic]

nic..

great info.. many thanks..

i assume.. the calculation will be the same, to nicd and nimh batts?

TIA

yar. power remains constant.

do remember that the charger also consume power.

[Crabby]

i think sim lin tower have many shops selling.......
u can try...

Thx for the info
I knw SIm Lim has many selling... but I was asking if anyone know which particular shop sells the cheapest...
So far I asked one shop at basement beside the battery shop selling around 28 or 29...
For 12V 7.2Ah
Was searching for a higher capacity batt...
I even used my old motor bike's battery but now I think it is wasted liaoz...