Battery for Lenovo ThinkPad P51S/T470 (compatible) — BTI 24Wh 3‑cell, 11.4V, 2110mAh

Replacement BTI compatible battery for Lenovo ThinkPad P51S, A475 and T470 series (models 20JN, 20JM, 20HE). This lithium‑ion 3‑cell pack provides 24 Wh (11.4 V) rated energy and a nominal capacity of 2110 mAh. Supplied as a single unit, the battery is intended to restore portable power to specified ThinkPad laptops for mobile use and basic on‑the‑go productivity.

Advantages

The battery uses Lithium‑Ion (Li‑Ion) cell technology which delivers a balance of energy density and weight suitable for thin and light workstation notebooks. As a compatible replacement designed for the listed ThinkPad models, it enables simple swap‑out installation and maintains the original form factor. The 11.4 V voltage and 24 Wh energy rating match the power requirements of the specified systems, providing predictable runtime characteristics for typical office and travel use.

Suitable for

• Replacing a worn or failing battery in Lenovo ThinkPad P51S
• Powering Lenovo ThinkPad A475 models compatible with the listed batteries
• Restoring battery capacity in Lenovo ThinkPad T470 systems for mobile work
• On‑the‑go productivity where OEM‑compatible battery form factor is required

Key specifications

• Battery technology: Lithium‑Ion (Li‑Ion)
• Cell count: 3‑cell pack
• Energy rating: 24 Wh
• Voltage: 11.4 V
• Nominal capacity: 2110 mAh
• Unit supplied: single battery pack
• Compatibility: Lenovo ThinkPad P51S, A475 and T470 series (models 20JN, 20JM, 20HE)

How to use

Power off the laptop and disconnect any external power source before replacing the battery. Remove the existing battery following the laptop manufacturer’s service instructions or user manual for the specified model. Install the replacement battery in the correct orientation until it clicks or locks into place, then reconnect power and power on the system. Allow the battery to charge to full capacity before first extended use to ensure accurate charge reporting and optimal initial conditioning.

Recommendations

Store and operate the battery within the temperature ranges specified by the laptop manufacturer. Avoid exposing the battery to extreme heat, moisture, or mechanical shock. For prolonged storage, charge the battery to approximately 40–60% and check charge levels periodically. Dispose of used batteries in accordance with local regulations for lithium‑ion batteries.