A correspondent requested details of a lightweight high-capacity 13.2 volt battery, which I use to power my Yeasu FT-857D for SOTA activations. The battery is a 4 cell 8.4 Ah Lithium Iron Phosphate (4S 8.4 Ah LiFePO4) purchased from HobbyKing’s Australian (AU) warehouse in Moruya NSW.
Battery Dimensions: 150mm x 52mm x 70mm. Weight: 960 grams, round up to 1 kg.
The battery is fitted with two 8 AWG leads terminated with 5.5 mm male (-ve) and female (+ve) bullet-connectors. The 5 pin JST-XH strip connector is for balanced charging. Rather than cut the bullet connectors off the leads, I decided to make a short DC cable adapter. One end of the adapter is fitted with a corresponding pair of 5.5 mm bullet-connectors, at the other end I installed a pair of 30 Amp Anderson Powerpole connectors. Why you ask?
In my shack I have standardised all DC power cable connectors to 30 Amp Anderson Powerpoles. The same 30 Amp Powerpole connectors have been retro fitted to the DC power leads of my two SOTA/field rigs. In doing so I have the flexibility to deploy any of my radio equipment to the field or for SOTA and not have to worry about finding matching OEM DC connectors.
With the exception of this battery, my 4S 4.2 Ah LiFePO4 plus three 2.2 Ah LiPo batteries are terminated with 30 Amp Powerpoles. Having one type of DC connector for all radio and battery power leads means I can execute a battery change without the fuss of dealing with different connectors. Having a standard DC connector helps when I change my mind on which radio I will take on a SOTA expedition. ☺
Photos: © Copyright 2016 Andrew VK1AD
While transporting the 8.4 Ah LiFePO4 in my SOTA backpack, the battery is safely enclosed in PLANO 1450 waterproof case.
PLANO 1450 waterproof case
13.2 volt 4S 8.2 Ah LiFePO4 battery
Homebrew DC cable adapter
Out of interest I have included a photo of the 13.2 volt 4S 4.2 Ah LiFePO4. DC connectors are 30 Amp Powerpoles
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