TheOx
New Member
- Joined
- Jan 6, 2021
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Battery Protect 12/24 220A - No Settings to support AGM typical low voltage cut-off recommendations?
We need to protect an off-grid solar system that is primarily used to power an 240VAC 80W sewerage system aerobic pump that is supposed to operate 24/7 and at least 4 hours per day in unattended use (private camp-ground). The battery is a Eclipse Power 280AH Deep Cycle AGM. We have purchased a Battery Protect BP220 to provide a low voltage cut-off to inverter however I notice that the highest low voltage cut-off on the BP220 is only 12.0V [Setting 8]. This is way too low in my research which should be above12.5V to maximize cycles. When there is poor light or after use at night, we need the battery protect to kill the load until the batteries are charged sufficiently. There is no-one the during the week.Am I making the correct assumptions about AGM ideal cut-off?
Am I using the right product?
Are there alternate settings (I doubt it)?
Is there a better product? (we are currently using KICKASS 12 Volt 140 Amp Dual Sensing Voltage Sensitive Relay and seems to do the job 12.8 cut-off)
Relative Notes:
Latronics LS-1012 1000W 12VDC Sine Wave Inverter
The inverter cuts out at 10V too-low also.Victron Battery Protect BP220 Settings
Eclipse Power 12V 280AH AGM Deep Cycle Battery | |
---|---|
Nominal Voltage | 12V |
Nominal Capacity (20HR) | 280.0 AH |
Dimension | Length: 520 ±3mm Width: 235 ±3mm Container Height: 235 ±3mm Total Height (with Terminal): 241 ±3mm |
Approx Weight | Approx 62.2 Kg |
Terminal | T11 |
Container Material | A.B.S. |
Rated Capacity | 280.0 AH/14.0A (20hr,1.80V/cell,25°C) |
Max. Discharge Current | 1850A (5s) |
Internal Resistance | Approx 3.0mΩ |
Operating Temp.Range | Discharge : -15 ~ 50oC (5 ~ 122oF) Charge : 0 ~ 40oC (32 ~ 104oF ) Storage : -15 ~ 40oC (5 ~ 104oF) |
Nominal Operating Temp. Range | 25 ± 3°C (77 ± 5°F ) |
Cycle Use | Initial Charging Current less than 75A. Voltage 14.4V~15.0V at 25oC (77o F) Temp. Coefficient -30mV/oC |
Standby Use | No limit on Initial Charging Current Voltage 13.5V~13.8V at 25oC (77o F) Temp. Coefficient -20mV/oC |
Capacity affected by Temperature | 40oC (104oF) 103% 25oC ( 77oF ) 100% 0oC ( 32oF ) 86% |
Self Discharge | Eclipse Power Deep Cycle AGM batteries may be stored for up to 6 months at 25oC(77oF) and then a freshening charge is required. For higher temperatures the time interval will be shorter. |