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Rectangular black lithium-ion battery with label showing model U8735

DELL

DELL U8735 NU209 laptop battery 3.7V 7Wh PowerEdge 1950 2900 2950

SKU CH-6JYA-H0SHY MPN U8735

Replacement lithium-ion battery for Dell PowerEdge 1950, 2900 and 2950 servers

  • TypeBattery
  • CompatibilityPowerEdge 1950 2900 2950
  • Battery TypeLithium-Ion
  • 7 V 7 Wh lithium-ion cell keeps the RAID controller cache alive during power loss
  • Direct replacement for Dell PowerEdge 1950 2900 2950 servers using PERC 5i or 6i
  • New factory-sealed unit with Dell part number U8735 NU209 ensures exact fit
  • 7 Wh capacity maintains write-back cache data until mains power returns

3.7 V 7 Wh Lithium-Ion battery

This 3.7 V 7 Wh lithium-ion cell is built for Dell PowerEdge 1950, 2900 and 2950 servers. It serves as the replacement unit for the PERC 5i and 6i controller cache backup. The battery is supplied new and ready to install.

Server administrators maintaining legacy PowerEdge

This battery suits technicians who need to restore RAID controller cache protection on the listed PowerEdge models. It will not fit other server lines, desktop chassis or newer PERC controllers that use a different form factor or voltage. Buyers needing higher capacity or a different chemistry should look elsewhere.

Highlights

  • 7 V 7 Wh lithium-ion cell keeps the RAID controller cache alive during power loss
  • Direct replacement for Dell PowerEdge 1950 2900 2950 servers using PERC 5i or 6i
  • New factory-sealed unit with Dell part number U8735 NU209 ensures exact fit
  • 7 Wh capacity maintains write-back cache data until mains power returns

Specifications

BrandDELL
ModelU8735
TypeBattery
CompatibilityPowerEdge 1950 2900 2950
Battery TypeLithium-Ion
Shipping weight0.36 kg
Package size254 × 203 × 102 mm

Questions about this item

How often will the U8735 lithium-ion battery need replacement under normal server use?

The U8735 lithium-ion battery typically lasts several years in PowerEdge 1950, 2900 or 2950 systems; replacement is needed when the PERC 5i or 6i controller reports a capacity drop or cache-protection failure.

What is the first limit reached when the U8735 battery operates continuously at 3.7V?

The 7 Wh capacity is the first limit; sustained draw will deplete the stored energy before thermal or voltage thresholds are reached.

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