====Lead acid battery====

===Positive characteristics===


•	Extremely high current output - low internal resistance - very high conversion efficiency (80-85%).


•	No voltage depression ("memory" effect).


•	Can be tailored for particular use (eg, deep cycle).


•	Low cost.


•	Low to medium self discharge (8-40% per month).


===Negative characteristics===


•	Dangerous chemicals used (lead, sulfuric acid).


•	Heavy.


•	Low storage density - "The energy a lead-acid battery stores per [kilogram] of battery is lower than just about any technology short of a potato wired with zinc plates."


•	Reduced capacity with increased temperature (50% with each 8°C).


•	Reduced capacity under heavy loads (Peukert Effect) - worse than sealed lead acid.


•	Cannot be stored flat.