The Power-Sonic Group was established in 1970 and has developed into a leading global supplier of VLRA rechargeable batteries. In 1986 the company expanded by setting up Power-Sonic Europe Limited in England, to better serve the important European and Middle East markets for portable power. The Company's main focus is on the design, manufacture and distribution of the cost-effective "Power - Sonic" brand of VRLA batteries; one of the best known and most popular brands in the rechargeable battery industry. Fully Sealed (cannot spill) - Rechargeable - Deep Cycle battery Suitable for cyclic and standby power applications. For standby power this range has a nominal 5 - 8 year life. Power-Sonic products are used by many different industries, in particular: Fire & Security UPS/Standby power Emergency lighting Renewable Energy Mobility General Electronics. --------Warning:-Remove bungs (plugs) immediately after receiving the battery or batteries (All types of flooded lead acid batteries) even in storage condition. Bungs (Plugs) are only for transportation use. If these instructions are not followed(removing bungs immediately) battery may get bulged or explode. Therefore, The Glasgow Car Detailing Garage Ltd is not liable for any damage, loss and injury due to not following the instruction and the warranty is voided. If you have any question or doubt we are happy to help you please contact us. Don't USE or BUY our products for life saving machine and equipments or where life is on RISK.