My battery was completely dead after not driving the car in winter for about a month. I connected a trickle charger to keep it alive but didn’t do a proper job so it died.

I am ordering a lithium version of Ctek now.

meanwhile I jumped my car (lifepo4) using my 993 battery (agm). It works but have engine light on now. Guess it’s something to do with low battery?

should I drive it around for a bit and when ctek arrives just connect it? Is that good enough? Thank you in advance. It’s like -5 outside all month long

 

IT's fine - drive around and it should go away. Had same issue.

 

Appreciate it. Just ordered lithium version ctek.

 

So the CTEK is a fine Charger.... but if you ordered one you might want to consider our Antigravity Battteries NEW Chargers...

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Digital Display show Voltage and Current going to the Battery, no LEDs that you can't really tell what is going on.
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It has a specific BMS wake up feature that actually works unlike other chargers.
OUr 10-Amp Version which charges much faster and is about the cost of the 5 Amp CTEK so you get much faster charging and many more benefits for the same cost.

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Why didn't the connected trickle charger work? Did you have it connected right at the battery, or through the 12V socket inside the car? Usually the status lights on the trickle charger tell you everything you need to know about status and the state of charge.