12V Battery charging when left for long periods

Aircub

Standard Member
Joined
Mar 27, 2026
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Location (town/city + country)
Broadstone, United Kingdom
Driving
HS PHEV
I'm heading off for about three months and need to leave my car unused during that time. My main concern is the 12V battery. From what I understand, it's only directly charged by the car's main battery when the car is running.

I've been looking into solar trickle chargers as a potential solution to keep the battery topped up while I'm away. However, I'm not entirely sure if this is the best approach or if there are other, more effective methods.

I'd love to hear your thoughts and experiences! What do you guys think would be a good solution for maintaining the battery charge over a three-month period? Any recommendations for solar chargers or alternative strategies would be greatly appreciated.

Thanks in advance for your help!
 
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