Application: 1. Solar power system 2. Solar power station Function: 1. Solar charger for lead acid battery 2. High efficient, Energy saving, Safe 3. Temperature compensated, LED display 4. Electric energy instruction 4. CPM control, offering battery reverse polarity protection, solar module reverse polarity protection, over-current protection, short circuit protection, and open circuit protection. INPUT: 1. Input voltage range: 12 / 24 VDC 2. Over charge protection: 14.4V / 28.8V ( /-0.2)Vdc 3. Over charge resume: 15V / 30Vdc OUTPUT: 1. Normal output voltage: 12 /24Vdc 2. Max. Output current: 30 A 3. Over discharge cut-off: 10.7V / 21.4Vdc 4. Over discharge resume: 12.6V / 25.2Vdc 5. Voltage drop: 0.2Vdc (Between input and battery) 6. Voltage drop: 0.2Vdc (Between battery and load) 6. No load current draw: < 15 mA 7. LCD indication: Display AMP / Voltage, Electric energy instruction 8. Temp. Compensated factor: From -4 ~ 6 mV/degrees centigrade per unit (Optional) ENVIRONMENT: 1. Operating temperature: -10 ~  55 degrees centigrade 2. Operating humidity: < 90%(RH) 3. Storage temperature: -20 ~  70 degrees centigrade 4. Cooling: Normal conditions 5. Vibration: 5mm / 50 Hz / 600s, Non-operating condition MECHANICAL 1. Plastic casing color: Pan-tone: 419C, black 2. Weight: 320 g 3. Size: 164 x 100 x 48 mm SAFETY 1. Temperature rise: < 40 degrees centigrade on plastic casing 2. MTBF: >10000 hours 3. ESD: 8.0 KV