Why does my battery behave like this?

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SUMMARY

The discussion centers on the behavior of a 16V 8Ah sealed lead-acid (SLA) battery pack during charging and discharging. Users noted that two cells in the pack exceeded 5 volts during charging, indicating potential overcharging, while the other cells maintained a healthy voltage of 4.8 volts. It was established that charging the pack at 16 amps could damage the cells, and a maximum charge current of 2 amps is recommended. Drawing 16 amps from the pack will not damage it, but it will significantly reduce the runtime to approximately 30 minutes.

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david90
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I have four 4 volts SLA and when I charge it, the two cells in the middle voltage goes up above 5 volts which is way pass the healthy charging voltage. The other two cells voltages stay at 4.8 which is good.


The pack is rated at 16v 8 aH. If I draw 16amp, will it hurt the pack?
 
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your sealed lead acid batterys are 4V each, if you charge them at 16A ,i believe they may in fact be damaged.. you should limit the time they are charging..and test the voltage periodically...
 
"If I draw 16amp, will it hurt the pack?"

If the drain current is 16amp not charge current. it is a different question. Charge current is around 2 amp max
 
The pack is rated at 16v 8 aH. If I draw 16amp, will it hurt the pack?
They will only last 1/2 an hour ,but i don't think it will hurt them , no..
 

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