Posted by John T on September 05, 2020 at 05:58:01 from (45.16.200.171):
In Reply to: 8V Battery..... Charger posted by banjoman09 on September 04, 2020 at 14:53:53:
Hello Banjoman
WOW lots of responses (some NOT a specific answer to your question) but that's typical for any electrical question, happens every time.
Lets look at your question:
Please tell me how to charge my tractor 8V battery...
If you cant find an 8 volt charger:
1) Use a "low capacity" smaller 12 volt charger ON "LOW CURRENT" SETTING for a "LIMITED TIME" keeping a close eye on water levels and avoid excess out gassing and boiling over........DO NOT turn it on and walk away a long time CLOSELY MONITOR the charging
DISCLAIMER so no one has a calf lol Im NOT saying this is proper or engineering correct or perfect safe, Im ONLY SAYING its one answer to your question (right or wrong) and I as a used tractor dealer having to deal with the situation over the years DID IT SUCCESSFULLY
2) Use a good working 6 volt generator BUT WITH A VOLTAGE REGULATOR PROPERLY ADJUSTED so it can charge your 8 volt battery.
NOTE this likely WILL NOT provide any high charge rate but if done right with the right regulation scheme it could possibly (if done correctly mind you) keep up
I read some one said to put an "inline 10watt resistor" in a 12V charger...how in the heck you do that boys?
While in theory and subject to a ton of factors and variables it may be possible to use a high power inline voltage dropping resistor in the charge circuit between the genny and battery so it drops the correct voltage and leaves in the range of say at least 9 to 11 or so volts to charge an 8 volt battery
THATS NOT A GOOD OR REAL SOUND ENGINEERING IDEA
If one were charging at 20 amps and the resistor was dropping 3 volts THAT WOULD REQUIIRE A 60 WATT POWER RESISTOR and a 10 watt would go up in smoke
As battery voltage rises the charge level if well regulated would back off
NOTICE I tried to answer your direct question, you DID NOT ask about using 6 volts or converting to 12 so I didnt answer a question you didnt ask......
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