Compatible for 18V Battery This Mini Jet Blower for 18V lithium batteries, such as BL1830, BL1830B, BL1840, BL1840B, BL1850, BL1860B (Battery NOT Included) 0utput Specification Battery Charger Output: DC 18V/20V, 4A(Max) and has an automatic threestage mode of Pre-charge constant charge Trickle charge(Does not support12V and 14.4V batteries) Charging TemperatureBatteries should before charging commences and the ambienttemperature should be less than 50℃(122℉)and more than -10℃(-14℉). Charging ProtectionThe charger has built-in circuit protection to prevent overheating, short circuits.extended time charging and detection of damaged batteries. This product is a portable mppt solar charger with a PWM mode and 5 series batteries that can be powered by solar panels. It independently manages the charging of 5-string batteries, when powered by solar panels, the internal circuit can automatically track the maximum power point of the solar panels, maximizing the utilization of the output power of the solar panels. has features low power consumption, high efficiency, stable operation, safety and reliability, and ease of use. Input: 22V-30V Output:18-21V-4A(MAX) Solar Charger Charging for 18V lithium battery Applicable models: BL1815N,BL1830,BL1840.BL1850B.etc Charging Procedure 1) Connect the power cable to the DC socket ofthe solar panel. 2) Insert the battery pack into the charger, making sure the pack is fully seatedin the battery cavity the red light indicting the charging process has started. 3) The charger show a steady red light up. The Red light flashes to indicatethat charging is in progress.The green light then be steady when fully charged4)After charging is complete unplug the charger from the power source. Color: As Shown Material: plastic Package Contents: 1 * Solar Charger Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.