villekille - thanks for sharing information about your design. Your heating to temp in 2 minutes is better than most vapes on the market. i restrict the current flow but still hit vape temp in 40 seconds. If you do a Google on "LiFePO4 charger" you'll find what you're looking for (among the 1.2million+ hits). this one might work for you i haven't looked into the Microchip MCP73113 other than to see the 1A charging rate which is too low to be stoner friendly. Other chargers go from 10A to the 2A wall wart i most recently found, with prices from $100, several in the $50 range (6A to 8A), one at $25 (4A) and down to the $10 for the 2A i'm evaluating now. These chargers mostly are for R/C people and require 12vdc input (car battery) -- not too convenient to have to strap the charger to a AC to 12vDC power supply. Have you checked out www.alibaba.com? -- this is the business-to-business website for all Chinese factories. You have to buy in large lots, but the price is the lowest -- maybe the quality is too. i keep searching for an OEM thermometer module with no luck to date. i wanted to have the batteries in the vape body also, but the weight of these 26650 cells is too much to hold comfortably. i'm sure this will change in the next year.