Attention before buying：1,the PV Voc can not exceed 30V for 12V battery; and 60V for 24V battery.2,Recommend to use nominal 18V panel for 12V battery, and 36V panel (single 36V panel or 2 units 18V panel in series) for 24V battery. Please do not arbitrarily use in series. 【plug-and-play】:SAE connector quickly connects or disconnects,plug and play,convenient and practical. At the same time,the package contains two additional 170mm SAE Extension cables,which can be extended or DIY your solar system. 【Mini and Portable】:The controller is equipped with an LCD display and LED indicator light.It is also very convenient to carry and connect when used outdoors. 【Security】:The controller has a built-in protection system and intelligent 3-stage charging(Equalize, Float, Boost),and it can also fully your battery,it is safer to use.This controller has good waterproof performance(IP45). 【Charging start condition】:PV voltage is 3V higher than battery voltage. PV minimum charging voltage is higher than 15V for 12V battery,27V for 24V battery. Meanwhile the battery voltage should be higher than 3V.
