Radio Power Supply for Communication(AC/DC Switching Power Supply) Features: CK1310 (linear): 1) Operating environment: 0 - 50°C 2) Converting form: linearity power supply 3) Input voltage: AC 220V ± 5% /110V AC 4) Output stability: ≤2% 5) Ripple voltage: ≤100mVp-p 6) Output voltage: DC 13.8V±0.2V 7) Output current: Rated:10A; Max:12A 8) Charge current: 1A ±0.5A 9) Weight: 5kg 10) Dimensions (W xD x H): 150 x 270 x 110mm CK1315 (switching): 1) Operating environment: 0 - 50°C 2) Converting form: switching power supply 3) Input voltage: AC 220V±10% /110V AC 4) Output stability: ≤2% 5) Ripple voltage: ≤100mVp-p 6) Output voltage: DC 13.8V±0.2V 7) Output current: Rated:15A;Max:17A 8) Charge current:1A ±0.5A 9) Weight: 2kg 10) Dimensions (W xD x H): 150 x 270 x 110mm CK1320 (switching): 1) Operating environment: 0 - 50°C 2) Converting form: switching power supply 3) Input voltage: AC 220V±10% /110V AC 4) Output stability: ≤2% 5) Ripple voltage: ≤100mVp-p 6) Output voltage: DC 13.8V±0.2V 7) Output current: Rated:20A;Max:25A 8) Charge current:1A ±0.5A 9) Weight: 2kg 10) Dimensions (W xD x H): 150 x 270 x 110mm Product features:1) Output voltage and output current display2) Charge state display3) Output over voltage, over current protection4) If there has mains power, the power supply will charge for the battery, if there has no mains power, the battery will supply to the power supply automatically.( Battery backup function)