converter questions

Lucky2B!

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Apr 27, 2026
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Have a B2320 tractor that I added a 8000W start/4000W run, taking 12V DC to 120V AC. It runs my tools for about 30 mins then I have to take a break to let it charge back up. Should I get a bigger alternator, Two batteries in parallel, or both ? Any suggestion would be appreciated.
 

85Hokie

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Jul 13, 2013
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What tools you using? A circular saw drawing 13 amps? or?

Two batteries will increase your run time - what type of batteries? Lead acid or Lithium?
 

William1

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Have a B2320 tractor that I added a 8000W start/4000W run, taking 12V DC to 120V AC. It runs my tools for about 30 mins then I have to take a break to let it charge back up. Should I get a bigger alternator, Two batteries in parallel, or both ? Any suggestion would be appreciated.
333 amps.... max draw for your converter, and that is not considering inefficiencies. You are not going to get that big an alternator. You need to go a PTO genset and run the tractor.
 

North Idaho Wolfman

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You would be much better off getting battery operated tools and charging those batteries. ;)
 

Hugo Habicht

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Have a B2320 tractor that I added a 8000W start/4000W run, taking 12V DC to 120V AC. It runs my tools for about 30 mins then I have to take a break to let it charge back up. Should I get a bigger alternator, Two batteries in parallel, or both ? Any suggestion would be appreciated.
Bigger generator decreases your charging time, bigger battery increases the running time you get (but also increases the charging time with the same generator).

Discharging a lead acid battery in 30 minutes (and fast charging it with high currents then) is kindof "abusing" it, it will decrease its life time.

My suggestion (not knowing what you are running from the converter) would be a PTO driven generator giving you direct 120Vac.
 

BAP

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For the amount of money that it will cost to try and make your tractor do you you want it to do, you could buy a small, fairly cheap inverter gas generator that would put out more than enough power.
 
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