Carlos Arruda

Here's the solar panel. It's a 25W 12V.

Specs below;

25w, 61.5 x 35 x 2, 2500g

Maximum power voltage: 18V

Maximum power current: 1.39A

Open circuit voltage: 21.6V

Short circuit current: 1.53A

Power allowance range: +/-3.0%

High efficiency solar panel

Low degradation.

Power output warranty: 5 year-95% 10 year-90% 25 year-80%

Strong anodized aluminium frame

Weatherproof

Works in low light, cloudy conditions and in-doors (facing the sun)

High transmittance low iron tempered glass with enhanced stiffness and impact resistance

£37.95 on eBay