Shopping security


| Wistek's classification and description of battery cell quality levels |
| Feature | Grade A | ESS Grade | Grade B | Grade C |
| Application | High Voltage ESS | Low Voltage ESS | Laboratory demonstrations or teaching | No Recommed to use |
| Discharge Rate | Stable | Slightly Unstable | Lower | Unpredictable |
| Cycle Life | Meets the specifications | Meets the specifications | Lower Cycle Life | Unpredictable |
| Internal Resistance | Lowest | Lower | Unpredictable | Unpredictable |
| Condition | Brand New | Brand New | Brand New | Used |
| Original Shipping Test | Availiable | Availiable | No | No |
| QR | Intact | Intact | Mark B or Reprint | Reprint |
| Appreance | Neat and without bulges. | Neat and without bulges. | Slight bulging | bulges |
The battery cell has been welded with a single M6 stud, which is convenient for DIY battery. It is recommended to use a torque of less than 6N.m for assembly.

The battery cells have the original test report, the QR code is intact, and all the battery cell test data can be tracked.(How to determine whether it is a Grade A battery?)

The battery cell comes with the necessary accessories, busbars, screws and epoxy sheets to assemble the battery pack.

The battery cells are packed in cartons that meet the requirements of dangerous goods, with transparent tape wrapped around the outside to prevent rainwater from seeping into the cartons. Customized sponges are used to fix the cells, effectively protecting them from impact damage.



Ships within 48 hours · Estimated delivery Jul 5 - Jul 10
US$40
Get nowSign up to your membership to get coupons up to
15%
Get nowOpportunity to enjoy order discount up to 15% off
Top-Converting Item to Boost Your Average Order