Re: 120 V AC to 120 DC Lawn Mower Conversion. CORDLESS !!

["Dennis Hawkins" <n4mwd@amsat.org>]

It would really help a lot if you said how many amps the mower 
consumed.  Using ten batteries will work just fine, but then you have 
ten batteries to replace.  Since you plan to make a direct connect to 
the motor with no controller, you will probably discharge them 
greater than 50%.  This means that you will get about 6 months or 
less service from a pack of brand new batteries.

However, if you simply use a 12V marine/deep-cycle battery and an 
inverter to convert it to 120VAC, you will be better off.  The 
inverter will run you about $300 for a 1000 watt model.

Another approach would be to rewind the mower motor to run at 12V or 
replace it with a 12V motor.  In any case, I don't think you are 
going to get anything working reliably for under $100.

Dennis.

On 30 Mar 00, at 21:02, Steven S. Lough wrote:

> Now I know from practical (jump it and try it) that 120 DC will run a
> 120 AC brush type lawn mower just fine...   The problem is getting  up
> to or near 120 DC with small lead acid batteries.

Dennis Hawkins (n4mwd@amsat.org)
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