L13L4A01 L12S4E55 laptop battery HY04 2200mAh 33Wh 14.8V 6-cell
Six-cell lithium-ion battery rated 2200 mAh 33 Wh 14.8 V fits Lenovo B40 B50 N40 N50 M4400 V4400 series
- Compatibility121500239 121500240 121500241 121500242 121500243 121500244
- Battery TypeLithium Polymer
- Sports TeamNational Teams
- Featureslithium_polymer, Rechargeable, 2200 milliampere_hour, 56.16
- Weight0.5 pounds
- 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.
Highlights
- 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
Specifications
| Model | HY04 |
|---|---|
| Part Number | HY04 |
| Compatibility | 121500239 121500240 121500241 121500242 121500243 121500244 45N1182 45N1183 45N1185 45N1186 45N1187 L12L4E55 L12M4E55 L12S4E55 L13L4A01 L13M4A01 L13S4A01 5B10K10151 5B10K10153 5B10K10154 4ICR18/65 4ICR18/66 |
| Battery Type | Lithium Polymer |
| Sports Team | National Teams |
| Features | lithium_polymer, Rechargeable, 2200 milliampere_hour, 56.16 watt_hours, 121500239 121500240 121500241 121500242 121500243 121500244 45N1182 45N1183 45N1185 45N1186 45N1187 L12L4E55 L12M4E55 L12S4E55 L13L4A01 L13M4A01 L13S4A01 5B10K10151 5B10K10153 5B10K10154 4ICR18/65 4ICR18/66, Laptop |
| Weight | 0.5 pounds |
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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