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Rectangular silver server power module with hot-plug handle

HP

HP 750W Flex Slot Battery Backup Power Supply 738024-B21

SKU CH-HS43-2D40N

Provides 750W hot-pluggable battery backup power for HP Flex Slot servers with 230-380V input

  • Max wattage750 W
  • Supply voltage230–380 V
  • Product typePower Module
  • Key featuresHot Pluggable
  • 750 W output delivers high-density server power
  • Hot-pluggable design enables tool-less replacement without downtime
  • Flex Slot form factor fits ProLiant Gen10 performance servers
  • Battery backup module protects against data-centre outages
  • Wide 230–380 V input range supports global deployments

HP 750W Flex Slot Battery Backup Power Supply

The HP 738024-B21 is a 750-watt Flex Slot battery backup power module designed for hot-pluggable, tool-less installation into compatible HP ProLiant Gen10 Performance Servers. It operates on an input voltage range of 230 to 380 volts and provides integrated battery backup functionality to help reduce data center outages during power interruptions. This unit serves as a direct replacement or spare part identified by option numbers 754380-001 and 751830-001.

Suited for HP ProLiant Gen10 server deployments

This module suits administrators managing HP ProLiant Gen10 Performance Servers that accept Flex Slot power supplies and require hot-swap capability with built-in battery backup. It is not suitable for servers using different form factors or input voltage ranges, nor for environments that do not support 230 to 380 volt supply infrastructure. Buyers needing higher wattage output or alternative connector types should look at other compatible power modules.

750W maximum power with 230 to 380V input

The single specification that determines compatibility is the 750-watt maximum power rating combined with the 230 to 380-volt AC input requirement. The server chassis must support the Flex Slot physical design and this specific voltage range for the module to function correctly. Verify the server power bay configuration and facility voltage before purchase to ensure proper operation.

How it compares

Measured against everything we stock in Server & Hot-Plug PSUs, at today’s prices. Recalculated every night.

Price $70.99
Cheaper than about 80% of the 3,798 comparable items (median $131.99).
Max wattage 750 W
Higher than about 60% of the 235 comparable items (median 668 W).

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Specifications

Product
Brand nameHP
Product typePower Module
Power
Max wattage750 W
Supply voltage230–380 V

Questions about this item

Should I choose the 738024-B21 retail part or the 754380-001 option part for my Gen10 server?

Both part numbers refer to the same 750 W Flex Slot battery backup module; the 738024-B21 is the retail SKU while 754380-001 and 751830-001 are option SKUs used in configure-to-order builds.

What does the 750 W rating deliver once the unit is installed in a ProLiant Gen10 chassis?

It provides up to 750 watts of continuous output to the server backplane, with battery-backed ride-through that keeps the power rails live during brief mains interruptions.

The input range shows 230 to 380 V — what does that cap in practice?

The module accepts single-phase AC from 230 V up to 380 V, so it operates on standard 230 V circuits and also on higher-voltage three-phase distribution without a separate transformer.

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