desert_sailing
Well-known member
- Joined
- Mar 26, 2020
- Messages
- 1,058
- Reaction score
- 29
I have 2- 35amp sealed deep cycle batteries wired to give me 70 amps total. If I am not entirely broken, that comes to 840 watts with 420 usable?
I picked up a 12v electric blanket the other day to test. Unfortunately it does not have multi setting and must have a built in theromostat that I can NOT adjust. I also cant just shut off and have to remove from the outlet.
It was only 20 bux and super snug. I like it alot but with my capacity.. 8 hours will entirely deplete my batteries.... which on the first night of usage it did. I figured I would wake up and pull the plug with one eye open..but I was super content surrounded by the warmth.
When I finally did get out of bed the voltmeter was reading 11.9 and nothing was plugged/running off the system...12.2 is half way I believe? So I was a bit under and worried if I damaged the batteries. I plugged the solar panels up but due to the smoke from regional fires it was a super slow charge.. took me basically 3 days to make serious gains using only a 100 watt panel.
Yesterday when I checked the recharge progress the meter was reading 12.9 volt... I thought the charging cycle would end to prevent overcharging?...I thought it had shutoff before automatically but now it doesnt appear to do so as the little icons show a flashing arrow from the sun and a rising battery bar flashing.
So I am curious if I have damaged the battery at all either by dropping so "low" or if I have damaged by going too "high"?
Is there a standard maximum high for a 12 volt or does it vary with battery manufacturer?
I unfortunately do not yet have a battery management system per se and can't see the actual amps.
Just curious if anyone had a quick answer..
Thanks!
I picked up a 12v electric blanket the other day to test. Unfortunately it does not have multi setting and must have a built in theromostat that I can NOT adjust. I also cant just shut off and have to remove from the outlet.
It was only 20 bux and super snug. I like it alot but with my capacity.. 8 hours will entirely deplete my batteries.... which on the first night of usage it did. I figured I would wake up and pull the plug with one eye open..but I was super content surrounded by the warmth.
When I finally did get out of bed the voltmeter was reading 11.9 and nothing was plugged/running off the system...12.2 is half way I believe? So I was a bit under and worried if I damaged the batteries. I plugged the solar panels up but due to the smoke from regional fires it was a super slow charge.. took me basically 3 days to make serious gains using only a 100 watt panel.
Yesterday when I checked the recharge progress the meter was reading 12.9 volt... I thought the charging cycle would end to prevent overcharging?...I thought it had shutoff before automatically but now it doesnt appear to do so as the little icons show a flashing arrow from the sun and a rising battery bar flashing.
So I am curious if I have damaged the battery at all either by dropping so "low" or if I have damaged by going too "high"?
Is there a standard maximum high for a 12 volt or does it vary with battery manufacturer?
I unfortunately do not yet have a battery management system per se and can't see the actual amps.
Just curious if anyone had a quick answer..
Thanks!