Battery charging / CTEK advice please

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Oct 12, 2022 | 07:57 PM

#21

jahummer

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Joined: Dec 2008

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From: Florida

Quote:

Originally Posted by wymjym

Is anyone suggesting that it does have bms?
In my situation I killed the battery and simply put my trusty 40 amp charger on the battery, while still connected to the car's electrical system. Next thing I knew I had blown out the alternator.
Somewhere there is a Jag warning about doing that to 2007-2009., but it seems reasonable that a smaller charge would be less likely to cause damage.

The 4.2, first gen, 2007-2009 does NOT have BMS and CTEK's a low current maintainer NOT a charger. BMS was introduced with the 5.0 litre motors in ALL JLR models. BMS stands for battery monitor system, designed to monitor battery health and charging only, working in conjunction with the alternator.

EDIT: Sorry, I thought you had said something about being told BMS + CTEK was the issue on your car, think it was the next post which referenced the 2009 having BMS which it does not.

Last edited by jahummer; Oct 12, 2022 at 08:02 PM.