Not getting amps out of panels
- Thread starter dflorio61
- Start date
Hedges
I See Electromagnetic Fields!
- Joined
- Mar 28, 2020
- Messages
- 20,496
How do you know battery is less than 50%?
What are Voc and Vmp of PV panels? Are they wired in series or in parallel?
What battery or batteries? Chemistry, voltage, amp hours, brand/model? If more than one, how wired?
What voltage do you see on battery? On PV terminals of charge controller?
Tests can include putting a load on the battery. Another would be to apply one PV panel directly to battery terminals, measure what voltage goes to. Measure current if possible, otherwise look up current vs. voltage in data sheet.
What are Voc and Vmp of PV panels? Are they wired in series or in parallel?
What battery or batteries? Chemistry, voltage, amp hours, brand/model? If more than one, how wired?
What voltage do you see on battery? On PV terminals of charge controller?
Tests can include putting a load on the battery. Another would be to apply one PV panel directly to battery terminals, measure what voltage goes to. Measure current if possible, otherwise look up current vs. voltage in data sheet.
Voltage of panels is 22 ams are 8.88 3 panels in series as for batteries 3 carbon fiber agm fireflys in parallel my inverter and battery monter both agree on the battery state of charge.
Also my voltage is fine not reciving amps
Hedges
I See Electromagnetic Fields!
- Joined
- Mar 28, 2020
- Messages
- 20,496
3 batteries, each 12V 116 Ah, in parallel for 12V 348 Ah?
oceanplanetenergy.com
Panels: 22 Voc? or 22 Vmp? 3 in series, about 66V.
Are you sure they're in series, not in parallel? In parallel, voltage might be low for a MPPT charge controller.
Inverter and battery monitor probably using battery voltage alone. May not have a temperature sensor (which allows for voltage adjustment depending on temperature.) Probably hasn't counted amp-hours to track state of charge. Probably doesn't know amp-hours. Voltage as an indication of state-of-charge depends on current draw at the moment, and resting time since charging/discharging.
This lack of current deliver probably is due to control by charge controller. Assuming panels are actually all getting direct sunlight.
Perhaps charge controller has entered "float" condition, a reduced voltage to maintain full charge but not deliver current. Could be it's settings are somewhat lower voltage than required for the battery, so it thinks battery is full and floating, while other components think battery is 50% discharged. Check voltage and battery type settings of charge controller. Also, charge controller needs a battery temperature sensor to adjust charging voltage.
What is the voltage of the battery bank at this moment?
Try wiring a single PV panel directly to the battery bank, and measure voltage again.
You could leave it connected for a while, so long as you disconnect before voltage exceeds maximum allowed charge voltage.
Firefly Oasis Battery - Carbon Foam AGM
The only Carbon-foam AGM battery is the Firefly Oasis Battery. Now available for marine applications, it is capable of deeper discharges and longer life
oceanplanetenergy.com
Panels: 22 Voc? or 22 Vmp? 3 in series, about 66V.
Are you sure they're in series, not in parallel? In parallel, voltage might be low for a MPPT charge controller.
Inverter and battery monitor probably using battery voltage alone. May not have a temperature sensor (which allows for voltage adjustment depending on temperature.) Probably hasn't counted amp-hours to track state of charge. Probably doesn't know amp-hours. Voltage as an indication of state-of-charge depends on current draw at the moment, and resting time since charging/discharging.
This lack of current deliver probably is due to control by charge controller. Assuming panels are actually all getting direct sunlight.
Perhaps charge controller has entered "float" condition, a reduced voltage to maintain full charge but not deliver current. Could be it's settings are somewhat lower voltage than required for the battery, so it thinks battery is full and floating, while other components think battery is 50% discharged. Check voltage and battery type settings of charge controller. Also, charge controller needs a battery temperature sensor to adjust charging voltage.
What is the voltage of the battery bank at this moment?
Try wiring a single PV panel directly to the battery bank, and measure voltage again.
You could leave it connected for a while, so long as you disconnect before voltage exceeds maximum allowed charge voltage.
Similar threads
