eryk2kartman
Chumono
Hi All,
Not strickly tree question but related
So i set up my small solar power station, i got kit from amazon - 20W solar power + controller, separately i got 2 7Ah gel batteries that i connected to increase capacity to 14Ah.
All looks good(sort of) controller shows 12.4V etc
so i hooked up some small 12v fans in the greenhouse for a test. panel is in sunny spot, fans are running full power.
The battery eventually died after while of 24h on time - i tried to test how long it last till battery dies - i hoped for full none stop power as they take only take couple of Watts.
So i disconnected load(fans) and tried to charge the battery, there is a setting on controller how low the battery can go with load - so i have that set up at 11.3V
so 3 days later battery still not charged - display on controller shows 11.8 now
So i thought something must be wrong, so i took my meter and started testing
1. The voltage provided by the panel itself is 18.3 V - GOOD
2. the voltage on batter is shown as 11.8V - same as on controller - GOOD
3. so checked the Amps now, with controller connected it shows 1.2A current which is the same if i connected panel directly to the battery- GOOD
4. when i connect panel to the controller without battery connected - it shows me current voltage as 14.4 V in the moment i connect the batter voltage goes down to 12.2V - dont know why ?
5. Last thing, looks like battery is not getting charged
I know its not very common question here but maybe someone had similar experience.
Appreciate any help on this,
My water pump is on the way and need to get this up and running quickly.
Not strickly tree question but related
So i set up my small solar power station, i got kit from amazon - 20W solar power + controller, separately i got 2 7Ah gel batteries that i connected to increase capacity to 14Ah.
All looks good(sort of) controller shows 12.4V etc
so i hooked up some small 12v fans in the greenhouse for a test. panel is in sunny spot, fans are running full power.
The battery eventually died after while of 24h on time - i tried to test how long it last till battery dies - i hoped for full none stop power as they take only take couple of Watts.
So i disconnected load(fans) and tried to charge the battery, there is a setting on controller how low the battery can go with load - so i have that set up at 11.3V
so 3 days later battery still not charged - display on controller shows 11.8 now
So i thought something must be wrong, so i took my meter and started testing
1. The voltage provided by the panel itself is 18.3 V - GOOD
2. the voltage on batter is shown as 11.8V - same as on controller - GOOD
3. so checked the Amps now, with controller connected it shows 1.2A current which is the same if i connected panel directly to the battery- GOOD
4. when i connect panel to the controller without battery connected - it shows me current voltage as 14.4 V in the moment i connect the batter voltage goes down to 12.2V - dont know why ?
5. Last thing, looks like battery is not getting charged
I know its not very common question here but maybe someone had similar experience.
Appreciate any help on this,
My water pump is on the way and need to get this up and running quickly.