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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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12V dry battery question
"Bart Bervoets" wrote in message ... I want to charge a 12V lead cell as used in security systems in my car to use with an inverter. I want to feed it a constant charge to allow the battery to be full all the time. Do i need to build a special charge circuit or will a diode in front be sufficient to stop reverse flow to my car battery? Bart Bervoets 'probably' your best bet would be to install a "DBI" (dual battery isolator). this is a solid state device that is basically a bridge rectifier. diodes steer the charging currents to the batteries and tell the regulator when to kick in. IME this works best when the 2 batteries are closely matched as to capacity. |
#2
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12V dry battery question
On Tue, 14 Mar 2006 17:01:07 +0200, "Bart Bervoets" wrote:
I want to charge a 12V lead cell as used in security systems in my car to use with an inverter. I want to feed it a constant charge to allow the battery to be full all the time. Do i need to build a special charge circuit or will a diode in front be sufficient to stop reverse flow to my car battery? There is a kit available in Australia for an automotive charger for sealed lead acid batteries. It uses a switchmode DC-DC converter to step up the output so that an adequate (and controlled) charge will result for variable input voltage. Highly recommend you go this route. |
#3
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12V dry battery question
I want to charge a 12V lead cell as used in security systems
in my car to use with an inverter. I want to feed it a constant charge to allow the battery to be full all the time. Do i need to build a special charge circuit or will a diode in front be sufficient to stop reverse flow to my car battery? Bart Bervoets |
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