Dr. Battery
Dr. Battery MPL10235P-01 laptop battery 11.1V 4000mAh 49Wh
Replacement lithium-polymer battery for Lenovo ThinkPad T420s models, 11.1V 4000mAh 49Wh with built-in protection chip
- ColorBlack
- TypeBattery
- CompatibilityLenovo ThinkPad T420s / T420s 4174 28U / T420s 4174 29U / T4
- Battery TypeLithium Polymer
- Battery Voltage11.1V
- Battery Capacity4000mAh / 49Wh
- Replaces original Lenovo ThinkPad T420s batteries
- Lithium polymer chemistry delivers 11.1V stable output
- 4000mAh capacity provides 49Wh of runtime
- Built-in smart chip protects against short circuit and overload
- New condition unit manufactured to OEM specification standards
Dr. Battery MPL10235P-01 11.1V 49Wh replacement
This Dr. Battery MPL10235P-01 is a new lithium-polymer laptop battery rated at 11.1V and 4000mAh for 49Wh. It replaces Lenovo part numbers such as 0A36287, 0A36309, 42T4844, 42T4845 and 42T4846. The pack targets owners of ThinkPad T420s models including the 4174 28U, 29U, 2AU, 2BU, L8U and PPU variants who need a direct voltage and capacity match.
Slide-in installation with latch release
The battery slides into the T420s rear bay and locks with the existing latch; no tools are required beyond a fingertip. Most issues arise when the old battery label is worn, leading to a voltage or part-number mismatch that prevents the pack from seating or charging. Verifying the original 11.1V marking and the exact Lenovo FRU code before fitting avoids returns.
Match your original battery label first
Before ordering, confirm your current pack shows 11.1V and one of the listed Lenovo part numbers such as 42T4844, 42T4845 or 42T4846. The T420s series uses several physically similar packs with different voltages, so a label check is the only reliable filter. Buyers who need a higher-capacity 9-cell design or a different voltage should look elsewhere.
Highlights
- Replaces original Lenovo ThinkPad T420s batteries
- Lithium polymer chemistry delivers 11.1V stable output
- 4000mAh capacity provides 49Wh of runtime
- Built-in smart chip protects against short circuit and overload
- New condition unit manufactured to OEM specification standards
Specifications
| Brand | Dr. Battery |
|---|---|
| Model | MPL10235P-01 |
| Color | Black |
| Type | Battery |
| Compatibility | Lenovo ThinkPad T420s / T420s 4174 28U / T420s 4174 29U / T420s 4174 2AU / T420s 4174 2BU / T420s 4174 L8U / T420s 4174 PPU / T420s-4170 / T420s-4171 / T420s-4172 / T420s-4173 / T420s-4174 / T420s-4175 / T420s-4176 / T420si / T420si 4170 / T420si 4171 / T420si 4172 / T420si 4173 / T420si 4174 / T420si 4175 / T420si 4176 / T430s 2352 / T430s 2352-2JU / T430s 2352-2KU / T430s 2353 / T430s 2353-2LU / T430s 2353-2MU / T430s 2353-2NU / T430s 2353-67U / T430s 2353-68U / T430s 2353-69U / T430s 2353-6AU / T430s 2353-6BU / T430s 2353-6CU / T430s 2353-6DU / T430s 2353-6EU / T430s 2353-6FU / T4 |
| Battery Type | Lithium Polymer |
| Battery Voltage | 11.1V |
| Battery Capacity | 4000mAh / 49Wh |
Questions about this item
How can I confirm the Dr. Battery MPL10235P-01 is working correctly after installation?
After fitting the 11.1V 4000mAh lithium-polymer pack, the ThinkPad should power on without the AC adapter and report the 49Wh capacity in the system battery gauge.
What comes in the box with the MPL10235P-01 and is anything else required?
The replacement battery ships as a single unit; no cables, tools or separate chargers are included or needed for the ThinkPad T420s series.
Which version of the MPL10235P-01 matches my ThinkPad T420s sub-model?
This single MPL10235P-01 variant replaces all listed T420s part numbers including 42T4844, 42T4845, 42T4846, 0A36287 and 0A36309.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
Case Logic
Case Logic 3203990 briefcase for 15.6 in laptop with 10.1 in tablet pocket
$30.99
0.00037232BTC
In stock