This is a generic, equivalent one, 100% compatible. This 6Volt 4.5Ah Replacement SLA battery is designed to compatible with PS-640 PS640F1 UB645.

Specifications:
* Product Type: generic/equivalent
* Battery Voltage: 6V
* Battery Capacity: 4.5Ah
* Chemical Composition: Sealed Lead Acid
* Terminal: F1
* Chemistry: SLA, AGM
* Battery Dimensions: 2.76 in x 1.86 in x 4.25 in
* Weight: 1.60 Lbs
* Condition: new, 1 Year Warranty!
* Integrated microchip prevents overcharging & lengthens battery life.

Compatible Model:
6V 4.4.5Ah PS-640, PS640F1, UB645 Replacement SLA Battery

This is a sealed lead-acid (SLA) absorbed glass mat (AGM) rechargeable battery. AGM and GEL batteries are lead-acid and of the same battery chemistry. This battery comes already charged, sealed, maintenance free, and ready to install.

Delivering power when you need it, the 6V 4.5Ah uses a state of the art, heavy-duty, calcium-alloy grid that provides exceptional performance and service life in both float and cyclic applications.

SLA batteries are utilized in a wide variety of applications including; Consumer Electronics, Electric Vehicles, Engine Starters, Golf Carts, Hunting, Lawn and Garden Tools, Medical Mobility, Motorcycles, Power sports, Portable Tools, Solar, Toys and Hobby, Access Control Devices, Emergency Lighting, Security and more.