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Rectangular black lithium polymer laptop battery with connector and included tools

NShi

NShi TT03XL 11.5V 4850mAh 56Wh laptop battery

SKU CH-AG13-M0EGJ MPN TT03XL

11.5 V 4850 mAh 56 Wh lithium-polymer replacement battery for HP EliteBook 755, 850 G5, G5-41, G5-42, G5-44 and ZBook 15u G5 G536

  • Battery TypeLithium Polymer
  • Fits HP EliteBook 755 850 G5 ZBook 15u G5 models
  • 4850 mAh capacity delivers extended runtime per charge
  • Lithium polymer cells with built-in microchip prevent over-charging and over-heating
  • 56 Wh energy rating supports long work sessions
  • Includes installation tools for straightforward replacement

Compatible HP EliteBook and ZBook Battery

This 11.5 V lithium-ion polymer battery replaces the original TT03XL unit in HP EliteBook 755, 850 G5, G5-41, G5-42, G5-44 and ZBook 15u G5 G536 laptops. It delivers 4850 mAh and 56 Wh of capacity for mobile professionals who need reliable power away from a desk.

Replaces Worn or Swollen Original Cells

The pack fits the same chassis and connector as the factory battery, restoring runtime lost to age, heavy cycling or swelling. The upgrade is worth it when the original no longer holds a useful charge through a typical workday.

Capacity and Runtime Headroom

The 56 Wh rating supports several hours of office applications, web browsing and video playback on supported models. Runtime drops under sustained heavy loads such as rendering or compilation, and the pack cannot power larger workstations or devices outside the listed compatibility list.

Highlights

  • Fits HP EliteBook 755 850 G5 ZBook 15u G5 models
  • 4850 mAh capacity delivers extended runtime per charge
  • Lithium polymer cells with built-in microchip prevent over-charging and over-heating
  • 56 Wh energy rating supports long work sessions
  • Includes installation tools for straightforward replacement

Specifications

Battery TypeLithium Polymer

Questions about this item

Does the TT03XL battery fit the HP EliteBook 850 G5 without modification?

The TT03XL is listed as compatible with the HP EliteBook 850 G5 among other models. It ships with a tool kit, but no user manual is included; professional installation is recommended.

What is the correct first-time charging procedure for this 11.5V battery?

Discharge the factory charge completely, then charge for 6-8 minutes without overcharging. Repeat 3-4 full cycles to fully activate the lithium polymer cells for best performance.

How should the metal contacts on this 4850 mAh battery be maintained over time?

Oxidation on the contacts can cause shutdowns. Wipe the contacts clean before use. Avoid inferior chargers, store partially charged, and keep away from extreme temperatures to preserve capacity.

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