Harris Li-ion Rechargeable Battery 12041-2400-02. Condition is "New open box". Assembled date 5/17. Insp/test date 05/20. This product has a warranty for 30 days. If any thing is defective, just return and receive a refund. We keep all serial numbers on everything we ship. Shipped with USPS First Class or Fed Ex. You can buy these in a lot of 10 for each.