Bixpy SUN45 Waterproof Solar Panel for PP-77-AP/PP-166 Outdoor BatteriesThe Bixpy SUN45 Waterproof Solar Panel is the perfect companion to your Bixpy PP 77 AP Power Bank and PP 166 Power Station. With 45 watts of output from mono crystalline cells, this solar panel will charge the Bixpy PP 77 AP Power Bank in 4 hours and PP 166 Power Station in 6 to 8 hours hours. NOTE: This solar panel will NOT charge other Bixpy Batteries and is specifically designed to charge the PP 77 AP Power Bank and PP 166 Power Station. *