I've had bad experiences with 2 Yellow Top batteries on our Prado and would not touch them again...
In the Defender I run the HVT-70ZZD Ultra High Performance Dual Purpose AGM Battery as a 2nd Battery and the Supercharge (Gold Battery) as my main. I just recently replaced my Supercharge main battery after over 4yrs of service as I was having some starting issues that pointed to the battery. I put a new one in and found out I still had the issue. I then cleaned all earthing points and starter term'ls and all is now good. I then tested the 4yr old Supercharge and it came up as still good at 76% healthy so I need to find something to use that on instead of letting it waste away...
Once the Aux battery comes to its end of life i will be going to lithium...
Curious here... I recently have read/seen a few reports on the Kings Lithium battery and to my surprise it got good reviews and said good value for money... Is there any ppl with 1st hand experience here that can give their opinions?

