mberding
New Member
- Joined
- Sep 20, 2019
- Messages
- 73
Let's set up the situation:
This situation does NOT happen if the batteries are NOT in over-voltage protection mode. Then system acts perfectly normally.
My working theory as an uneducated electrical-engineer wanna-be is that the inverter is taking power from the batteries to run the load, but it takes more than it needs. So it tries to relinquish some, but there's nowhere for it to go since the batteries are in over-voltage protection mode. So then the system voltage spikes.
Can anyone give a better theory, or otherwise prove I'm crazy?
- A charger is running (could be solar, DC-DC, or shore power) and is outputting 14.something volts (generally 14.2 or 14.4 depending on charger)
- All batteries are in over-voltage protection mode (because they're sucky grade B cells and no amount of top-balancing will ever bring them in line)
- A load is placed on the inverter. Could be a mini fridge, heat gun, anything with a couple hundred watts.
This situation does NOT happen if the batteries are NOT in over-voltage protection mode. Then system acts perfectly normally.
My working theory as an uneducated electrical-engineer wanna-be is that the inverter is taking power from the batteries to run the load, but it takes more than it needs. So it tries to relinquish some, but there's nowhere for it to go since the batteries are in over-voltage protection mode. So then the system voltage spikes.
Can anyone give a better theory, or otherwise prove I'm crazy?