The battery pack is 3 days late, not instruction in French. I fully charged the battery before use and then have discharged through normal use before recharging. Charging at 12 am and took recharging 100% I only have 2:30 of use instead of 4h. This battery poses real quality problems: recharge time, service life of the load. I wish I could make this article and be reimbursed: how?