Aldi smart battery chargers
Submitted: Thursday, Sep 03, 2009 at 20:57
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kcandco
Has anyone checked out the smart chargers at Aldi, I believe for under $100. Up to 12 amp charge rate and has a 12v 12amp power socket for using with fridges etc. Also suitable for AGM batteries. Comments appreciated!!
thanks Kc
Reply By: Holden4th - Friday, Sep 04, 2009 at 21:06
Friday, Sep 04, 2009 at 21:06
Here are the specs
* Three stage high frequency charge
* Fault diagnosis and alarm
* For 12V lead acid batteries
* DC 12V output up to 12 amp
For $20 extra I got this
Site Link
It's available from
Site Link
3 stage vs a 7 stage automatic - it's a no brainer but it runs out tomorrow I believe. I bought it last weekend and it works perfectly.
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Reply By:- Sunday, Sep 06, 2009 at 23:07
Sunday, Sep 06, 2009 at 23:07
Had a interesting experience this afternoon with two of these switch mode style battery chargers.
I had left my dual battery solenoid on for a week and half and the Hilux hadnt been used for that time. Both batterys flat as a maggot actually both where at 5V measured with a calibrated Fluke 83. I tries a brand new AC Delco charger.
Well what a fiasco. It thinks that the battery is a 6V olt battery (standard lead acid)so that is never going to work so I get out my old transformer rectifier charger I made as a apprentice 16 years ago, Bang we are away and charging at 3 amps. 10 hours later the battery is at 13.2 Volts and the charger current had dropped to 0.8A.
Mean while the mate offered me his switch mode charger so I thought yeah I can do my Sealed lead Gel auxillary battery on the rear with it. It to was at 5V. Connect it up and it starts drawing 8 amps. 15 minutes later I
check it no LEDs. Battery still at 5V.
I know has the old transformer rectifier charger on it pulling 6 amps and volts climbing.
So it seems to me these switch mode chargers arent worth a wheelbarrow load of rocking horse poo when you have really flatened your battery right down. Yet the old tried and proven gear pulls through. Will be asking one of the electrical engineers at work why it is so tomorrow.
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Follow Up By: Member - Mike DID - Monday, Sep 07, 2009 at 12:55
Monday, Sep 07, 2009 at 12:55
Modern chargers have protection built in because a battery that's been over-discharged needs to be charged at very low current to minimise any damage to it.
Sure, a normal 3-stage charger will charge the battery, but you'll and with the battery's life being shortened.
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