V-Force Maintenance Free batteries are high-output batteries and are holding voltage better than regular lead-acid batteries. "BS" type batteries come dry with a special easy-to-use high-gravity battery acid pack. Once filled from this special pack, the acid is totally absorbed in the special plates and separators. The battery is then permanently sealed with the included plug off strip, never to be opened again and ready for use. Because of the permanent seal, there is no need for the Yuasa V-Force batteries to check the acid level, nor topping-up with distilled water again. "FA" type batteries are Factory Activated, so the acid is not supplied in a bottle but already inside. V-Force batteries have been tested and proven on Big Inch and High Compression motors. Even engines with 14:1 compression can be easily started.
Note: These High Power batteries will need longer charging time than normal lead-acid batteries. You should ride the bike for 50 to 60 miles to fully recharge the battery after starting. If this is not done the use of our AccuMate Trickle Charger (ZPN238436) is recommended when the bike is stored. On some models minor modification of the battery hold down system may be necessary.