Ideal for Temporary Power Backup for Critical Communication Equipment

Power Supplies - 48V DC 20aH Battery Pack
Battery Pack

The RLH 48V 20Ah battery packs consists of four 12V batteries contained within a fiberglass weatherproof enclosure. Battery packs are commonly used with AC/DC power supplies to provide uninterrupted backup power in the event of a power outage.

The battery pack is designed to be easily mounted, using a quick-mount plate that the battery housing attaches to. It is designed to be used indoors or in a weatherproof housing.

The life expectancy of the battery is up to 5 years of standby service. Excessive hot or cold temperatures will decrease battery power and life. Depleted batteries are field replaceable by qualified personnel.


  • Fiberglass enclosure with hinged door and locking latches
  • Includes sealed, maintenance free, lead acid batteries with AGM technology
  • High cycle life, deep discharge capable
  • Easy to access, pluggable, screw down terminals
  • Ideally suited for 48VDC UPS applications
  • Up to 5 years of stand by service

Battery Pack Construction:
Fiberglass with hinged door and locking latches

H 18 in. x W 16 in. x D 10 (H 457mm x W 406mm x D 254mm)

Wall mount

Power Connection:
Screw down power terminals, liquid tight cable strain relief in bottom of cabinet

80 lbs. (36kg)

Internal Batteries:
Quantity 4, 12VDC, 20Ah

Battery Type:
Sealed Lead Acid, AGM, Deep Cycle, spill proof, maintenance free

Nominal Voltage:

20 Ah @ 25˚C

6A, user replaceable

Operating Temperature Range:
Discharge -15˚C ~ 50˚C (5˚F ~ 122˚F)
Charge -15˚C ~ 40˚C (5˚F ~ 104˚F)
Storage -15˚C ~ 40˚C (5˚F ~ 104˚F)

Charging Voltage:
54 to 55.2VDC average @25˚C (77˚F)

Maximum Charging Current Limit:

Self Discharge:
Less than 10% after 90 days, Battery pack can be stored for up to 6 months at 25˚C (77˚F)
Batteries must be charged before using

* Extreme temperatures will reduce storage time

General Information


Lead Time: 1 Week*

For product questions, volume pricing and/or delivery outside of the US and Canada, please contact sales.


48VDC 20Ah Wall Mount Battery Pack

Short descriptionPart numberPrice
48 Volt DC Battery Pack with 20Ah Capacity, Wall MountRLH-4820-1BP$680.00

Replacement Battery Set

Short descriptionPart numberPrice
Replacement Battery Set For RLH-4820-1BPRLH-4820-1RB$360.00

*Lead times are estimates and may vary. You will be contacted within 1 business day to go over the details of your order. If you require a specific date, let us know!
*Days = Business Days

WarningWarning: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to

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