charging 12 sla from cars 12vdc supply ?

[mark krawczuk]

hi, any one got any ideas on how to charge a 12 v sla from a cars 12 vdc
supply ?
i suppose a boost converter circuit to get the voltage up ?
all i need is to charge the 12 vdc sla for a torch. i want to leave it
pretty well connected up permanetly, so its always charged, ready to go ,.
any schematics , links etc....

thanks.
mark k

 

[Jasen Betts]

On 2010-02-01, mark krawczuk <krawczuk@adam.com.au> wrote:

hi, any one got any ideas on how to charge a 12 v sla from a cars 12 vdc
supply ?
i suppose a boost converter circuit to get the voltage up ?
all i need is to charge the 12 vdc sla for a torch. i want to leave it
pretty well connected up permanetly, so its always charged, ready to go ,.
any schematics , links etc....

thanks.
mark k

Gelled lead-acid operate at pretty much the same voltage as wet lead-acid.
I reckon you could just connect it in parallel to the main
battery while the engine is running.




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[JeffM]

mark krawczuk wrote:
i want to leave it pretty well connected up permanetly

Jasen Betts wrote:
I reckon you could just connect it in parallel to the main battery
while the engine is running.

You changed the parameters without specifying a remedy.

 

[PeterD]

On Mon, 1 Feb 2010 10:13:14 -0800 (PST), JeffM <jeffm_@email.com>
wrote:

mark krawczuk wrote:
i want to leave it pretty well connected up permanetly

Jasen Betts wrote:
I reckon you could just connect it in parallel to the main battery
while the engine is running.

You changed the parameters without specifying a remedy.

No he didn't, he just clarified it a bit! <g>