These are Neo Champ batteries purchased new and broken in using the following procedure (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 5A discharge, 1A charge cycle with THUNDER. ⑤ Analyze (analyze) with C4 EVO to check capacity and internal resistance values for pairing. ⑥ 5A discharge, 1A charge cycle with THUNDER again. Since there are several in stock, pairing with closer values is possible. As a bonus, a battery case that holds four AA batteries is 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 work equipment and environment, and the product does not include a charger or power supply. Also, the values displayed on the machine are during the process and do not guarantee the final battery values. The product condition is listed as "Slightly scratched or dirty" because it has been opened once and put in and out of the charger. The battery case is treated as packing material. Even if there is no problem with the condition of the batteries, we cannot respond to claims if the case is damaged. We will always ship in a case for 4 batteries, but the type and shape of the case may change.