This lithium-ion battery charger set has a smart and compact shape, yet it outputs extremely powerful power. The charging capacity is 14,000mAh, which is the largest capacity among mobile types. It is a battery that can easily meet the large power demanded by Shimano's strongest "Beast Master" and Daiwa's strongest "SEABORG". A battery suitable for deep-sea 200-300m class electric reels. When fishing on a boat with an electric reel, you can afford to fish for a whole day! The electricity fully charged in this battery cannot be used up in one day. Also, because it has a high power of 14.8V to 16.8V, the reel winding speed is faster than its rivals! - please note - The USB port has a rubber cap to prevent foreign matter from entering. However, it does not have a waterproof function. Therefore, when using it on a ship for electric reels, it is recommended to waterproof it in advance to prevent seawater from entering in case of emergency. -------- Also, since it has two USB ports, you can charge your smartphone for "everyone" with your family and friends if you take this battery for outdoor use. If you go out to mountains or rivers without a power outlet all day long, you don't have to worry about your cell phone running out of battery. Of course, if it is a DC type, it can also be used for LED lamps and desktop fans. Also, in the event of a disaster, this large-capacity battery should be a reassuring ally. Even if a power outage occurs, you can charge your mobile phone, so you can access disaster status and recovery information. [specification] -Battery body size: 213x104x45mm, /1.2kg -Battery type: Lithium ion -Rated voltage: 14.8V (USB port: 5V) [Package Included] -Battery body -Charger -Carry Bag -English Manual (with 90-day warranty). That's all. If you have any questions, be sure to ask any questions before you buy!