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Rectangular black lithium-polymer laptop battery pack, six cells, 14.8V 2200mAh 33Wh

L13L4A01 L12S4E55 laptop battery HY04 2200mAh 33Wh 14.8V 6-cell

SKU CH-0E5K-PJW0V

Six-cell lithium-ion battery rated 2200 mAh 33 Wh 14.8 V fits Lenovo B40 B50 N40 N50 M4400 V4400 series

  • Battery typeLithium Polymer
  • Team affiliationNational Teams
  • Compatible with121500239 121500240 121500241 121500242 121500243 121500244
  • Key featuresLithium polymer, Rechargeable, 2200 milliampere hour, 56.16
  • Product weight0.5 lb (0.23 kg)
  • Reliable power for Lenovo IdeaPad and Eraser models
  • 2200 mAh capacity delivers 33 Wh of runtime
  • 8 V lithium-polymer chemistry with six cells
  • Built-in overcharge, overdischarge and over-temperature protection
  • Up to 500 recharge cycles for long service life

Replacement battery for Lenovo IdeaPad and Eraser

This 6-cell lithium-polymer pack delivers 2200mAh at 14.8V for 33Wh of capacity. It replaces part numbers including L13L4A01, L12S4E55, 45N1182 through 45N1187 and 121500239 through 121500244. The unit fits B40, B50, N40, N50, M4400 and V4400 series notebooks. Buyers needing a higher-watt-hour design or a different voltage must choose another model.

Sustained discharge and cycle life

Built-in protection circuits guard against overcurrent, overcharge, overdischarge, excessive temperature and short circuits during extended use. The manufacturer rates the pack for up to 500 recharge cycles over its service life. Cells are assembled to meet OEM specifications for consistent output across repeated drain and recharge sequences.

Thermal behaviour and power efficiency

Temperature control functions limit heat build-up while the battery powers the notebook under normal workloads. Low power consumption circuitry helps maximise runtime between charges. The pack weighs 0.5 pounds and contains no user-serviceable components.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $36.99
Pricier than about 66% of the 27,790 comparable items (median $30.99).

Specifications

Product
Model nameHY04
Part numberHY04
Power
Battery typeLithium Polymer
Size & build
Product weight0.5 lb (0.23 kg)
More details
Team affiliationNational Teams

Questions about this item

Does the 6-cell 14.8V HY04 battery generate noticeable heat or drain quickly when the laptop runs all day?

The lithium-polymer pack includes over-temperature and short-circuit protection, and the manufacturer rates it for up to 500 recharge cycles, so sustained daily use stays within the designed thermal and power envelope.

Which part numbers must already be on my Lenovo laptop for this HY04 battery to fit and work?

It replaces part numbers 121500239, 121500240, 121500241, 121500242, 121500243, 121500244, 45N1182, 45N1183, 45N1185, 45N1186, 45N1187, L12L4E55, L12M4E55, L12S4E55, L13L4A01, L13M4A01, L13S4A01, 5B10K10151, 5B10K10153, 5B10K10154, 4ICR18/65 and 4ICR18/66.

Will this 2200mAh 33Wh battery work in an older Lenovo IdeaPad B40-30 that originally shipped with a lower-capacity pack?

Yes, the HY04 is listed as compatible with the IdeaPad B40-30, B40-45, B40-70, B50-30, B50-30 Touch, B50-45, B50-70, N40-30, N40-45, N40-70, N50-30, N50-45, N50-70, M4400, M4400A, M4450, M4450A, V4400 and V4400A series.

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