9th May 2010 - 12:13 PM
I built a rig where a Lead-Acid battery is charged from the output from a wind turbine, then the battery keeps a 1 watt light lit continuously for approx 1 day. Is the Lead-Acid the most suitable for this application or would other battery types be better, if so why? I understand with regard to lithium ion they have an issue with expense and they degrade significantly over a couple of years but what about NiCad or Alkaline batteries do they offer anything extra when compared to Lead-Acid?
9th May 2010 - 02:23 PM
Generally speaking, if weight isn't an issue, then lead-acid is probably the best choice as far as cost goes.
Other batteries have higher density storage, but at a cost, and if the battery is stationary, density (power/weight) has no value.
If you go with a decent charge controller and a sealed (or gel) L/A then there is no more maintance either (else you have to periodically check water levels)
Alkaline batteries are not considered rechargable.
2nd October 2010 - 12:38 PM
Any good recent study on battery charge leakage data, across differenty types?
2nd October 2010 - 01:31 PM
2nd October 2010 - 03:24 PM
Cell leakage is usually a small fraction of cell capacity - the worst I know of are high capacity Nimh cells - which you wouldn't want to use anyway.
The notes here might be helpful:-http://en.wikipedia.org/wiki/Deep_cycle_battery