I recently had MTO Battery rebuild two of my Profoto® B2 PCA1322-0000 batteries and the experience was excellent from start to finish. Turnaround time was fast, communication was clear, and the rebuilt units were returned extremely well packaged and protected.
Both batteries are functioning perfectly and are performing exactly as they should. It is clear they take care in both the rebuild process and in how they handle professional equipment.
Based on this experience, I will absolutely be sending additional professional-grade batteries to MTO Battery in the future. Highly recommended.