This is a replacement SLA battery for WP20-6, SLA0986, PS-6200, LP6-20, DJW6-20 and RB6200. We guarantee the best price and 100% compatibility with your Kung Long WP20-6 model. The replacement sla batteries also include a minimum of one year warranty. Popular applications for our sla batteries are UPS, emergency lighting, security, fire and burglar alarms, scooters, wheelchairs, medical, and other.