Botac probably bought the Energizers and Sanyos for a discount in very large qty as their prices beat anyone elses I've seen. Otherwise, Energizers and Sanyos are typically pricier than Amondotech Titaniums and BS cells. I mention this for a reason: The reason why Titaniums and BS cells are so cheap is acceptance requirements are loosened to improve yield at the factory, so more product per input resources, and less scrap/reject material to eat into profits. What this means for the end customer is that there is more variability in performance and quality. What you pay for in the additional cost of the more well known brands is stricter acceptance requirements and the overhead associated with those requirements, but at the same time, you get a more consistent quality and performing product in the end. Numerous tests have been done on Titanium and BS cells that show larger variation in performance and quality (various charge levels, etc. from same batch, date code, etc.). They're not bad batteries, but they are compromised for the cost. Just bear that in mind in your purchase decision.
