โOct-07-2020 05:16 PM
โOct-11-2020 10:45 PM
โOct-11-2020 09:54 AM
โOct-11-2020 09:19 AM
BFL13 wrote:pianotuna wrote:
PbO2+Pb+2H2SO4 -- ChargeDischarge -- 2PbSO4+2H2
BFL13,
If I am reading that chemical equation correctly Hydrogen is produced on discharge.
From;
https://www.sciencedirect.com/topics/engineering/sealed-battery
The link says the last part is "2H2O" not "2H2" but it is confusing.
My Battery Bible--
http://www.bestconverter.com/Books_c_67.html
just says that on discharge, " the hydrogen ions in the electrolyte move to the positive plates and combine with the oxygen to form water---"
on recharging, "the positively charged hydrogen ions are attracted to the negative plates where the hydrogen combines with the lead sulfate to form lead and sulfuric acid. When most of the lead sulfate is converted to lead, hydrogen bubbles form at the negative plates and rise through the electrolyte.....oxygen appears at the positive plate when this process is near completion. the formation of the gas indicates the battery is nearing complete charge..."
โOct-10-2020 11:21 PM
โOct-10-2020 07:07 PM
pianotuna wrote:
PbO2+Pb+2H2SO4 -- ChargeDischarge -- 2PbSO4+2H2
BFL13,
If I am reading that chemical equation correctly Hydrogen is produced on discharge.
From;
https://www.sciencedirect.com/topics/engineering/sealed-battery
โOct-10-2020 05:57 PM
โOct-10-2020 01:47 PM
Chum lee wrote:
How well ventilated is your battery compartment, if one exists? In high draw conditions, wet cell (lead/acid) batteries will eventually off gas hydrogen and oxygen in large enough quantities to go boom. (not good)
Chum lee
โOct-10-2020 12:14 PM
Chum lee wrote:
How well ventilated is your battery compartment, if one exists? In high draw conditions, wet cell (lead/acid) batteries will eventually off gas hydrogen and oxygen in large enough quantities to go boom. (not good)
Chum lee
โOct-10-2020 11:48 AM
โOct-08-2020 09:38 PM
time2roll wrote:
At 75 amps they are rated for 115 minutes. Of course that is dead. Closer to 45 minutes would be better.
75 x 3 = 225 amps and should be plenty to drive most anything. I assume it would be very rare to actually load the inverter to the max rating. I think you are fine with the 6 pack.
Have you considered going to 8 batteries and 24 volts?
โOct-08-2020 09:33 PM
ktmrfs wrote:S Davis wrote:
What is a max amp draw for a pair of Trojan T105s? I am trying to figure out wire sizing.
more than likely the max current you will stuff in them to charge will be greater than the max current you pull. But you need to consider both cases. And both will depend on what you have. 50A charging is not unreasonable with a good charger, 6V jars don't like more than about 30-50A longer term draw. Disadvantage of GC is higher internal resistance which affects battery voltage on larger draw.
โOct-08-2020 09:29 PM
โOct-08-2020 09:18 PM
theoldwizard1 wrote:
Instead of trying to figure out what the MAXIMUM possible current that can be pulled from a battery, install a 200A battery post fuse.
โOct-08-2020 09:10 PM