Subsequently, question is, how long will a 200ah battery last? Petrol left in a fuel tank would show up as a … 150 watt TV / 12-volts = 12.5 amps. We can generally say an AGM battery can last two to three times as long as a flooded battery. As can be seen in Figure 1 the battery type e.g. (watts = amps x volts) 12.5 amps / 0.85 efficiency of inverter = 14.7 amps needed from the battery to overcome the 15% loss of the inverter and still provide 12.5 amps to the TV. For the 48V system, is the amp hrs calculated as 800AH (4*200ah) or is it still only 200AH since it is connected as a 48V? Throw away how long will a battery last calculator, and l et’s see an actual case, 10 Ah battery delivering 1A, would last 10 hours. A single solar panel of 280 watts will do the work for you. 2) Battery Type. Renogy's 12v AGM Battery will keep you going for as long as you need. I want to install 4 X 64 W panels , 250AH Batteries. And so on. In practice when you discharge a lead-acid battery at a high rate (in this case Capacity / 2.4 -- which is a high rate), you don't get all that energy. Exclusions may apply See Details. In the commuter car example we referenced, if a flooded battery lasts three to five years, an AGM battery could last six to ten years or longer. This place receives at least 10 Hours of day light it is on the equator. Ok. 200AH @12Vdc = 2400 WattHours and that is for a Brand New Battery being discharged to Totally FLAT, which will KILL that Battery, DEAD, in just a few Cycles. 12 * 200 = 2400 Watt-hours, so theoretically it could last 2.4 hours. Battery capacity is a measure (typically in Amp-hr) of the charge stored by a battery. Secondly, how many solar panels does it take to charge a 100ah battery? for a given capacity C and a discharge current I, the time will be, However, battery capacity decreases as the rate of discharge increases. FREE SHIPPING! While the volts is indicative of how much power is left, it is not like a fuel gauge. Wet Cell, Gel or AGM can give different voltage readings for percentage of charge left. Kindly shed light on my query. You may think that calculating how long a battery will last at a given rate of discharge is as simple as amp-hours: e.g. Never be without power agian. Let’s find out how long a 100AH AGM battery can power a 150 watt TV below. So you need 1200 / 250 = 4.8 hours of bright sunlight. Under a 15 amp load, our 100 AH Battery should be discharged no more than 6 hours and 9 minutes. Hi all I want to install a solar power system for my office that consumes 4,000 Watts. (Up to maximum current that your battery can handle) So by fixing your desired charging time, you can determine the current. If i have a 12V inverter system, using a 1* 200AH battery and a 48V inverter system which requires 4*200AH battery to get the system to perform. Or if delivering 10A, it would last for only 1 hour, or if delivering 5A, it would last … Runtime with 50% Safe Discharge Level - The last field tells you approximately how long your battery will last under the given load and circumstances. The 200AH battery can feed 200 Amps for 1 hour, or 100 Amps for 2 hours, or 10 amp for 20 hours. and a 4.5 to 5KW Inverter, How long can the system power all appliances during the day or during the night? For a 200ah battery, if you are giving 1A(Ampere) supply, it’ll take 200hours to fully charge. If you use 2A supply, it’ll take only 100hrs. The nominal total energy in Your battery is: 12 V * 200Ah = 2400 Wh So in consequence the maximum time to run this motor with full power is: 2.4 kWh / 3 kW = 0.8 h = 48 minutes. Then find out wattage of the panels required ( voltage x current ). Deep Cycle AGM Battery 12 Volt 200Ah. 280 watts will do the work for you by a battery say AGM. 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