Riderr NanoVolt Charger

Does what it says on the box. Very small, slim, fits into pockets. Very useful to charge the battery when there's no mains electricity around; just plug in the power bank. No more having to worry about battery now.

Using this as a battery tender in the winter.
Installed 3 days ago along with a 30,000mah battery bank.
After installing, Worked on the bike with the ignition on for about 30 minutes which also puts the lights on.
Just checked it and the charger is showing solid green. Meaning fully charged and the battery bank still has 66% charge remaining.
This seems to have solved my problem of not being able to get a power supply to the bike, when the weather is not good enough to take the bike out.