Best Solar Trickle Charger

I use the oxford solariser, around £30, I believe it only trickle charges and but doesnt maintain or whatever. Coincidently I went away on holiday for 2 weeks and had the tiger connected to it, went to start it this morning and it seemed fully juiced up, started no probs. Optimate do one that does the full maintanace charge etc and that is roughly £100. Never used it but it can't be bad

 

I am in a similar situation with no electricity where my bike is kept. I went for the Optimate 20W solar charger/maintainer and I find it works very well. During the lock down I also use it on my car battery and it keeps that topped up as well.
The charger has red, amber and green LEDs to indicate state of charge and it only takes a few hours to go from amber to green. There is also a blue LED to indicate when it is charging.
The 20W appealed to me as sunlight is not guaranteed during our summer and currently on this wet day it is still charging.
I hope this helps.
Alfie

 

I have tried a mini solar charger before and left it plugged in over night, by morning my battery was completely depleted. I think there was some reverse current or similar.

For about £150 / $200 you can get a 100w solar panel, charge controller etc for the garage roof
Amazon UK link
Plug your battery into that to charge, and have a deep cycle battery too that can provide lighting for your shed/garage

I haven't got this as there is too much shade to make it work
Instead I charge a deep cycle battery on a long extension lead and this powers the six LED light strips, only needs a charge once every 3 month