Jul 29, 2015
Coleman Rechargeable QuickPump battery upgrade
This Coleman Rechargeable QuickPump model 5999C400 had a dead 6V lead-acid battery. Simple replacing of the old-school battery seemed too boring, so an upgrade to Li-ion was attempted. There were some complications, and some compromises had to be made. I hope you will enjoy discussion of the design decisions and technical challenges involved.
RFP70N06 MOSFET data sheet: http://www.mouser.com/ds/2/149/RFP70N06-100073.pdf
Sony Li-ion Technical Handbook: http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Prototyping/Lithium%20Ion%20Battery%20MSDS.pdf