Ultra-fast Maximum Power Point Tracking (MPPT)
Especially in the case of a clouded sky, when light intensity is changing continuosly, an ultra-fast MPPT controller will improve energy harves by up to 30% compared to PWM charge controllers and by up to 10% compared to slower MPPT controllers
Load output
Over-discharge of the battery can be prevented by connecting all loads to the load output. The load output will disconnect the load when the battery has been discharged to a pre-set voltage. Alternatively, an intelligent battery management algorithm can be chosen: Battery Life. The load output is short circuit proof. Some loads (especially inverters) can best be connected directly to the battery, and the inverter remote control connected to the load output. A special interface cable may be needed, please see the manual.
Battery Life: Intelligent battery management
When a solar charge controller is not able to recharge the battery to its full capacity within one day, the result is often that the battery will continually be cycled between a ‘partially charged’ state and the ‘end of discharge’ state. This mode of operation (no regular full recharge) will destroy a lead-acid battery within weeks or months. The Battery Life algorithm will monitor the state of charge of the battery and, if needed, day by day slightly increase the load disconnect level (i.e. disconnect the load earlier) until the harvested solar energy is sufficient to recharge the battery to nearly the full 100%. From that point onwards the load disconnect level will be modulated so that a nearly 100% recharge is achieved about once every week.
| BWB solar charge controller | MPPT 75/20 |
| Battery voltage | 12/24V Auto Select |
| Rated charge current | 20A |
| Nominal PV power,12V | 300W |
| Nominal PV power,24V | 600W |
| Max.PV short circuit current | 20A |
| Maximum PV open circuit voltage | 75V |
| Peak efficiency | 98% |
| Self-consumption | 10A |
| Charge voltage(absorption) | 14.4V/28.8V(default) |
| Charge voltage(float) | 13.8V/27.6V(default) |
| Charge algorithm | multi-stage adaptive |
| Temperature compensation | -16mV/ºC reap. -32mV/ºC |
| Protection | Battery reverse polarity(fuse)Output short circuit/Over temperature |
| Operating temperature | -30to+60ºC(full rated output up to 40℃) |
| Humidity | 95%,non-condensing |
It works as it should