DenCo Batt Mk VII
The DenCo Batt Mk VII was the first to incorporate a USB module to power up to 2.4A of 5V USB power for devices. This iteration also included balance leads (much like RC batteries) so that one could use a BattGo BG-8S Battery Meter to see each cell’s voltage. Also new in this build was …
DenCo Batt Mk VI
This iteration incorporates a new cell type, the VariCore 32700 LiFePO4 3.2V cell, found on Aliexpress. These look like LiitoKala copies, or rebranded LiitoKala, but have a slightly more accurate description in that they are marketed as 6Ah cells instead of 7Ah. General Specs:Created: January 11, 2020.Cells: VariCore 32700 6Ah 3.2v LiFePO4.BMS: 4S 100A 12.8V …
DenCo Batt 6
This iteration is based on the Mk V, and incorporates the slim 100A BMS and LiitoKala “7Ah” cells which I’ve grown fond of. This and Batt Mk VI were quicker builds for ham friends, and omitted the automotive fuse on the output. The rest of this pack stuck with the tried-and-true design. General Specs:Created: January …
DenCo/RexCo 2
This battery was a design conceived by KE6MT after he received the Mk IV battery from me. Rex drew up a flat pack 4S2P design that I would spot weld for him, and he would complete. Rex later went on a deep dive creating an Arduino-based cell monitor showing each 2P combination’s voltage for the …
DenCo Batt Mk V
This battery turned out to be the basis for several other batteries. It incorporates a new 100A “slim BMS” that I found from Aliexpress. I also integrated neoprene padding to help cushion the overall pack, although this padding is a false sense of security as the battery cell holders are very fragile and will crack …
DenCo Batt Mk IV
Similar in design to the Mk III, this battery continued on what I learned from the 4S2P LiitoKala build, and was miniaturized for QRO small-batt operation. Little did I know this would be the most frequently built form factor. This battery was the first to use a spot welder from Malectrics, utilizing the high cold-cranking-amps …
Bespoke Reactor Mk III
This was my first build using LiitoKala “7Ah” LiFePO4 cells from AliExpress. The rating seemed too good to be true, and in actuality these cells go about 6 amp-hours. Like the Mk II, this battery incorporates the 100A BMS and an automotive fuse. General Specs:Created: June 14, 2019.Cells: LiitoKala 32700 7Ah 3.2v LiFePO4BMS: HX-4S-F100AConfiguration: 4S2PNew …
Bespoke Reactor Mk II
This was the second build by AD6DM using K2 High-Drain 26650 cells. This time in 4S3P configuration for 8.55Ah of capacity. Created in June of 2019, AD6DM uses this battery for personal use even today. This battery incorporated more solder practice and liberal use of flux, creating a better bus bar solder experience. Since the …
Bespoke Reactor Mk I
This was AD6DM’s first foray into building a small battery pack. The soldering job was horrendous, due to learning how to solder. This battery’s goal was learning and the goal of powering both QRP (<= 10 watt) and QRO (up to 100 watt) radios. I also wanted at-a-glance voltage readings, so it incorporated a LED …
AD6DM Power Case
The AD6DM Power Case was inspired by Julian OH8STN‘s build of his Solar Power Generator. It was AD6DM’s first attempt at putting together a ham radio battery power source from component parts. It starts off with the vaunted Headway 40152S 15Ah cells. These are similar to 38120 Headway cells that have 8Ah capacity, but are …