you need an AGM smart charger and only use the battery charge connections in the engine bay, never connect directly to the battery.
I use one of these but there are cheaper smart chargers
https://www.amazon.co.uk/CTEK-MXS-7-.../dp/B00604UABY
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XC90 Inscription D5 Power pulse, 2017 MY, Savile grey, Blond Nappa, Leather dash/door tops, Walnut inlays, Dark tinted windows, Air suspension, Bliss/Cross traffic alert, Xenium/7 seat comfort/Family/Winter packs, 4 zone climate, Heated rear seats.
Last edited by nu11eaf; Jun 17th, 2021 at 17:05.
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