Suggestions for a SLA battery charger

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SLA battery charger

this charger generate a lot of heat. but it simple.
SMPS on LM2673(for example) working better.
 

SLA battery charger

yes very good one. I tried it.
 

Re: SLA battery charger

thank you ppl for the replies


as this circuit doesn't have automatic cutoff, is it ok if i leave the charger connected ALWAYS.
or can you please suggest a circuit with automatic cutoff





 

Re: SLA battery charger

a battery must be charged with 1/10 of its AH value
so18 divided by 10 comes to 1.8 amps
LM317 has a 1.5 amps output so it is not advisable to use this circuit as it will run overheated and fail
better to use the LM350 circuit which has a 3 amps rating
 

Re: SLA battery charger

har297 said:
thank you ppl for the replies


as this circuit doesn't have automatic cutoff, is it ok if i leave the charger connected ALWAYS.
or can you please suggest a circuit with automatic cutoff





Click to expand...

Use stend-by mode of charging. This way you can leave the charger connected ALWAYS
 

Re: SLA battery charger

try this circuit, it will float charge the battery also
**broken link removed**
 

SLA battery charger

Hi,
These are from Tony Van Roon's site. His circuits are usually quite reliable:
Code: 
http://www.sentex.ca/~mec1995/gadgets/labc2.htm
**broken link removed**
**broken link removed**
**broken link removed**

Hope this helps.
Tahmid.
 
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