Douglas DSU12-400 Battery Replacements

We recommend the EnerSys HX400-12FR battery as a replacement for the discontinued Douglas DSU12-400. Due to its specialized isolated seal, it can be put in a horizontal way, vertical way and side way, all while maintaining its safety features and functionality. With a self-discharge rate of less than 3% per month, the replacement Douglas DSU12-400 UPS battery has an expected life up to 10 years in standby use and it can be used for up to 300 cycles at 100% discharge in cycle service.

The EnerSys HX400-12FR Battery is our 100% compatible replacement for the Douglas UPS12-100MR unit. We have listed the specifications for each battery side by side below for easy comparison.

Order Requirements: There is a minimum order quantity of four units per order. If you're looking for more than four units please feel free to shoot us an email via the contact us tab with the quantity you're looking for and your delivery zip code. A live battery specialist will get back to you within 24 hours.

Warranty: The EnerSys HX400-12FR battery replacement is covered under a one-year free replacement warranty directly through High-Tech Battery Solutions, Inc.

Douglas DSU12-400 Battery Replacment Features:

• DataSafe® HX Top Terminal
• Capacity: 23-780 WPC (Watts per Cell)
• Designed specifically for UPS applications
• Electrochemistry optimized for high rate performance
• AGM (Absorbed Glass Mat) VRLA (Valve Regulated Lead Acid) technology
• Design life of 10 years
• Flame retardant case and cover to meet UL1778
• 100% initial capacity
• Classified as High Performance
• UL recognized and IATA approved (air freight)
• Manufactured in EnerSys ISO 9001:2008 registered production facility

Douglas DSU12-400 Battery Replacement Specifications:

• Length: 13.4 (in)
• Width: 6.8 (in)
• Height: 8.5 (in)
• Weight: 80 lbs
• Terminal: Insert (M6)

Any questions regarding the Douglas DSU12-400 Battery Replacement series? Please feel free to either give us a call toll-free at 1-877-775-4381 or contact us to talk to a specialist today.