Renewable Energy Log

April 2007
27th - 12v Items

March 2007
24th - New Monitor Box

January 2007
30th - 90Ah SLA Battery
26th - New Charge Controller
10th - 18w Panel Smash

December 2006
23rd - RE Radio Shack
4th - RE Laptop
2nd - 10mm LED Torch

November 2006
21st - Panel Stand

October 2006
16th - More Portable Ideas
10th - More Portable Ideas
8th - Portable Ideas
2nd - 60w Array

September 2006
20th - 18W eBay Panel
20th - Solar Monitor Box
17th - CCFL Lights
17th - 17Ah Battery Datasheet
5th - SLA Batteries

August 2006
6th - 6W Folding Panel

Copyright © 2006-2007
Andrew Whyman

17.2Ah SLA Battery Datasheet:

I just found a datasheet for the SLA battery used in my powerpack. It shows that it can do deep discharge cycles and handle them very well, but I assume this is provided they are charged almost instantly after discharge. This said it'll be no good for a solar system if you use it all at night and you get no charge till 9am the next day.

100% DOD - 250 cycles
50% DOD - 550 cycles
30% DOD - 1200 cycles

I always try to do no more than 50% DOD (12.2v according to the chart). Usually its no more than 25% ish DOD (12.4v).