landyacht318 wrote:
If only the charge controllers blinking green light did indicate a full charge.
Guess it does not really matter much if you get to go home and plug in.
100 watts on a pair of t105s cycled more than 20% every night is not going to work well after 2 weeks.
Negating overnight usage and proper full recharge are not the same thing
Landyyacht, I have some doubts.
1) Blinking light on cheap controllers is usually a bulk stage, and steady light is full or float :), but I guess they in China can make it the other way around too.
2) It's not clear how bulk at 30-50A on 110V charger at home is better than bulk at 10-15A on solar. My batteries don't have any "minimum" charging current, only "maximum". Do Trojan 6V have a recommended minimum current?
3) 20% depth of discharge (80% remaining charge) would be a VERY good cycle for any battery. Most users cycle them down to 60-50% (remaining charge) every night.
4) Yes, full recharge has not only to be full, but also at proper Absorption and Float voltages. Cheap controllers don't have means to adjust these voltages, so getting a better controller makes sense. But panel wattage has no bearing on this, as long as it's sufficient to get the battery bank to 14.4V or whatever is recommended Bulk/Absorption voltage.
