![]() ![]() Since batteries have a limited capacity (or amp hours) it's important to size a battery large enough to handle the amperage demand for your application. If you take this power from a 12.5 VDC source, then the total amperage required increases to 3.31 Amps (or 3,310 mAH). We use 12.5 volts for 12 volt battery systems.ĭC Amperage - Now we know that our application uses 36 watts of total power. Therefore the 120 VAC x 0.3 Amps equals 36 Watts.ĭC Voltage - Output Voltage is rating of your battery system, usually a single 12 volt battery. It's calculated by multiplying voltage by amperage. Wattage - Wattage is the total amount of power the application uses. For instance, our example application draws 300 milliamps, which is the same as 0.3 Amps. This number is usually rated in Amps, if the current is rated in milliamps (mAh) you can convert it to Amps by dividing the number by 1000. Most applications have this listed on the AC power brick. For these examples, we'll use the US standard of 120 Volts AC (240 can be entered in the calculator for the inversion).ĪC Amperage - Input Amperage (AH) is how much current the application draws from the AC power. In the US it can be anywhere from 100-125 VAC. There is a solar article that goes well in depth on these calculations if you’re interested in the techie type stuff: Solar Info: The Down Low on Everything Up High Enter AC Device Ratings AC Voltageįind Your Battery Choose Your Inverter WalkthroughĪC Voltage - Many applications will have a range of Input AC Voltage. This calculator includes the typical inefficiencies in efforts to give you realistic DC Amperage Rating. Just enter your AC Voltage and AC Amperage into the fields below and we will do all the hard calculations for you. The calculator also provides the wattage rating you are pulling so you can properly size the power inverter you need! This calculator helps you determine the DC amperage as it passes through a power inverter. The first step to sizing the battery pack when using a DC to AC Power Inverter is to know your DC Amp rating. (Not to be confused with a converter, which takes AC to a DC.) The other problem is how the cells will accept the charge according to the layout.Welcome to our AC to DC Amperage conversion calculator! So, you’ve got an electrical household device you need to run but no regular grid power available, right? For this you need a DC to AC Power Inverter that takes the DC voltage a battery provides and inverts it to AC voltage so that you can run an AC Powered Device. BatteryMINDer Model OBD-48: 48V On-Board Desulfator. BatteryMINDer Model 48021: 48 Volt 2 Amp (48V 2A) Battery Maintainer/Desulfator. If we multiply this by 10 cells we get an ideal charge with 12 hours The 10A charger may force too much current and damage the cells. BatteryMINDer Model 483CEC1: 48V 3 AMP Charger-Maintainer-Desulfator. Here is what I gathered from my readings:ġ2V/7.2Ah safe charge requires 12 hours 600mA I don't know exactly how this automatic charger works but if we go by the formula posted earlier in this thread it looks like this scheme would charge a bit too fast. The ten cells would have their - posts connected to a common rail and the + posts connected to another common rail and these would terminate externally on the case as two insulated posts (one for each rail). After each use recharge them as soon as possible. More important with lead acid batteries: Do not leave them partially discharged for extended periods and do not discharge them fully. ![]() Provided you do not leave it at the charger for days. For instance the LTS-NP25 (PDF at ).īut for your bicycle a fixed voltage of 2.45V/cel will suffice. These will measure DC and are not that expensive, around $10. But the perfect solution is a compensated current transformer from LEM. Sensing current can be done with a resistor in the ground lead of the batteries. Besides this, the voltages are also slightly temperature dependent. When the charging current drops to 5% of the Ah value switch over to 2.35V to trickle charge. So the best and fastest way is to charge with 2.45V current limited to app. ![]() For standby use a trickle voltage of 2.35V/cell is recommended, for cyclic use 2.45V/cell is recommended. With lead acid batteries the trickle voltage depends of their use. BINGENUO 48V 15Amp Golf Cart Battery Charger with LCD Display - Golf Cart Charger with 3 Pin Round Plug 48 Volt Club Car Waterproof 10ft Cable. ![]()
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