SM-Energy NI2040 DR201 Battery 11.1v 4.2Ah 47Wh Li-Ion
This SM-Energy battery from National Power Corporation is 11.1v 4.2Ah 47Wh rechargeable Li-Ion (lithium ion) and replaces DR201 and NI2040 batteries. These batteries are designed to work in a variety of applications including laptops and medical equipment.
| Brand: | SM-Energy | National Power Corp |
| OEM Part: | SM201-5.0-35 | SM201-6 | SM201-4.2 | DR201 | NI2040 |
| Nominal Voltage: | 11.1v |
| Nominal Capacity: | 4200mAh 56Wh |
| Chemistry: | Rechargeable Li-Ion |
| Weight (g): | 325 |
| Dimensions (In.): | 8.47 x 2.086 x .762 |
| Notes: | Smart Battery 1.1 Compliant |
Learn more about the Unipower Quality Guarantee
Reviews
We're currently collecting product reviews for this item. In the meantime, here are some reviews from our past customers sharing their overall shopping experience.
4.7
Out of 5.0

Overall Rating
96%
of customers that buyfrom this merchant give
them a 4 or 5-Star rating.
August 20, 2026 by William C. (TN, US)
“Easy and straight forward.”
August 20, 2026 by BobD (NY, US)
“Finding needed product and subsequent checkout process went very smooth.”
August 17, 2026 by Alan D. (MI, US)
“I was able to retrieve my order from 2024 and confirm the right product. Thanks.”

