[SEL] Winch batteries

[Frank DeWitt]

If you are using this winch every day then I would go with the deep 
cycle batteries.  For one engine show a week or less with a fair amount 
of driving to and from the show I would just use a inexpensive car 
battery and charge it from the tow vehicle.  Here is how.  Connect a 
high wattage 12 volt bulb such as a back up light bulb between the 
trucks 12 volts, and the battery.   The bulb serves as a variable 
resistor between the truck and the trailer battery. When the trailer 
battery is low the bulb will light, limiting the current drawn from the 
truck. This protects the trucks alternator and wiring.  As the trailer 
battery charges the light will get dimmer.  Light bulbs have a unique 
characteristic. When they are cold, there resistance is very low.  This 
will allow the battery to get that last bit of charge that would take 
longer then with a normal resistor with a high enough resistance to 
protect the truck wiring with a dead battery.  I used this hookup for 
many years with a camper and it worked well.

Frank

On 12/16/2015 3:54 PM, MBellar at aol.com wrote:
> I purchased a Stanley jump start portable battery pack at Sams two years
> back and use it to power a power  winch to load engines on and off my
> pickup. Works fine with a built in battery charger air compressor and trouble
> light. Saved my butt on several occasions. There is enough battery power to
> load several engines.
>   
> Tom
>   
>   
>

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    Frank DeWitt           |  mailto:frank at lbpinc.com
    Mechanical Design      |  Phone:  585 624 3052
    LBP  INC.              |
    2365 Cox Rd.           |
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