If you notice that it''s been at 14.4V for more than a few hours, and the current reported by the BMV is less than 12A into the battery, then it''s done, and you can terminate
AI Customer ServiceThanks for the question. The charge controller voltage output rating needs to pair up with the battery voltage and the current rating needs to match up with the amount of DC potential so as
AI Customer ServiceIf the system is in ''float'' mode you may see an increase in current but not voltage, if the load is less than the available wattage of the solar panel. If larger than the wattage
AI Customer ServiceSlightly higher voltage than the battery. Usually charge controllers have settings to calibrate the voltage display reading. As explained above use a multimeter to confirm ctuall
AI Customer ServiceFirstly, we want to look at the nominal system voltage. This will tell us what voltage battery banks the controller is compatible with. In this case, you can use 12V or 24V battery banks. Anything higher, such as a 48V battery
AI Customer ServiceI think the best option is to move the charge controller closer to the battery bank, the voltage
AI Customer ServiceIf your application needs a system where its important to charge at higher
AI Customer ServiceCurrent Rating: Most small systems operate within a current range of 10-30 amps. Distance: If the distance from the solar charge controller to the battery is short (less
AI Customer ServiceController input power = battery power (W) = battery voltage (V) x battery current (A) Controller efficiency = controller output power ÷ controller input power Personally I might
AI Customer ServiceI think the best option is to move the charge controller closer to the battery bank, the voltage drop will vary depending on the amount of current passing through the wire, so the charge controller
AI Customer ServiceIf the "demand" is less than available solar power, then the output voltage of the DC/DC converter will rise to its maximum allowable voltage - probably set as a parameter on a
AI Customer ServiceIf the "demand" is less than available solar power, then the output voltage of the DC/DC converter will rise to its maximum allowable voltage - probably set as a parameter on a controller. Even if the voltage is high and no
AI Customer ServiceWith the EV motor controllers, the stated maximum current is the current
AI Customer ServiceSo the current from the panels will be less than the current to the battery. Short answer, You are okay as long as your input voltage is in the proper range. mikefitz
AI Customer ServiceTry to look at it as if the battery were a load on the charge controller. If the battery needs more amps than the charge controller can supply then the voltage will drop. The charge controller''s
AI Customer ServiceThese are usually found in eBikes that cost $1000 and above. Conversely, eBikes costing less than $1000 don''t have an LCD. However, there is a battery indicator on the battery or handlebars, which allows you to measure battery life and the
AI Customer ServiceTry to look at it as if the battery were a load on the charge controller. If the battery needs more amps than the charge controller can supply then the voltage will drop. The charge controller''s actual output is still 14.4 volts, but the load that
AI Customer ServiceIf the system is in ''float'' mode you may see an increase in current but not
AI Customer ServiceCharge current is less than expected. Several factors can cause this, such as: Insufficient solar supply. Refer to the Insufficient solar supply subchapter. the output power into a 12V battery
AI Customer ServiceIf your application needs a system where its important to charge at higher currents you need a different battery or an additional battery in parallel. With your solar setup,
AI Customer ServiceIn the world of solar energy, one component that plays a crucial role but is often surrounded by queries is the charge controller. It''s essential for the health and efficiency of
AI Customer ServiceCurrent rating - The current rating of your controller should be less than the output current of the battery on your e-bike, most tend to be between 25A and 40A. Driving
AI Customer ServiceIf your charger merely connects the panel to the cell, the battery will draw all the current until the panel voltage drops to 4V, but since the panel can''t give more than 1.1A, that
AI Customer ServiceThe battery is a 36V 10.4Ah pack that is unbranded/came with the bike but appears to be this one. Currently the controller on the bike has a rated current of 7A and max
AI Customer ServiceFor example if a lithium battery has a maximum continuous discharge current of 30 Amps and a speed controller demands 31 Amps from it for more than a few seconds then the lithium
AI Customer ServiceWith the EV motor controllers, the stated maximum current is the current limit for the motor. The battery current will be less than the motor current until full throttle is applied
AI Customer ServiceSo the charge controller could be right in being 12.7 if the batt is reading 12.8? Which battery did it autodetect and did it autodetect the right one? 12.7 volts for a lead-acid bat at full charge seems low. Usually the charge controller will charge at. Slightly higher voltage than the battery.
Of course it won't work normally, because controller will try to regulate load current using battery charge profile. Most likely one of the safety features will kick in and shut it down, thinking there is something wrong with the battery. I don't think you can do anything to make this work.
A charge controller will only use the amps available to perform it's function. Excessive amps provided by panels to a charge controller are simply ignored, and this is the basis of overpaneling: to provide minimal amps with gray skies, and a great excess of amps with blue skies.
With rising/decreasing the output voltage of the DC/DC converter the current trough panel is changing, thus the MPPT point can be found. If the "demand" is less than available solar power, then the output voltage of the DC/DC converter will rise to its maximum allowable voltage - probably set as a parameter on a controller.
solar > load (battery not fully charged): solar will power the load and rest will go to the battery. solar > load (battery fully charged): In this case, the charge controllers curtail the power generation to match it exactly with the load. The excess solar energy is lost in the form of heat.
If it were truly charging the battery, then the voltage would be higher when charging than idle, but they are both the same. Here's what the controller meter shows: I'd assume that amperage reading in the middle indicates that it's putting 3.9A into the battery, but maybe that only means what's available.
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