These are Neo Champ batteries purchased new and broken in using the following procedures (approximately 10-15 days of break-in): ① Break-in with C4 EVO: 0.5A for a slow break-in. ② Initial conditioning with C4 EVO: 1A discharge, 1A charge cycle. ③ Main conditioning with C4 EVO: 1.5A discharge, 1A charge cycle. ④ Cycle with THUNDER: 5A discharge, 1A charge cycle. ⑤ Pairing by analyzing capacity and internal resistance with C4 EVO. ⑥ Cycle with THUNDER again: 5A discharge, 1A charge cycle. Since there are several in stock, pairing with closer values is possible. As a bonus, a case that holds four AA batteries will be included. The batteries will be shipped in the bonus battery case. Masking tape will be used to mark the paired batteries. Image 2 is for introducing the equipment and environment used for the work, and the product does not include a charger or power supply. Also, the values displayed on the machine are from the process and do not guarantee the final battery values. The product condition is listed as "Slightly scratched or dirty" because the batteries have been opened and inserted into a charger, etc. The battery case is treated as packing material. Even if there are no issues with the battery condition, we cannot accept claims for damage to the case. We will always ship in a case for 4 batteries, but the type and shape of the case may vary.