[aprssig] Batteries for standalone trackers

[Rob]

On 21/02/12 05:54, Andrew Rich wrote:
>
> Taking a tracker on a boat and a plane.
>
> Any good suggestions of battery technology ?
>
> Are radio control battery packs a good option ?
>
> Little GELL CELL ?

Andrew, I've been using SLA,  NiMH packs and LiPo packs and I found the 
LiPos to be the best. The energy to weight ratio is the best choice of 
the three. SLA are too big and heavy.
I bought generic LiPos from DFRobot like this one 
<http://www.dfrobot.com/index.php?route=product/product&path=70&product_id=489> 
and from Sparkfun like this one 
<http://www.sparkfun.com/products/10471>. The 7.4v work fine on 
OpenTracker. You'll need to check the specs of the GPS if it's not 
operating on the OT 5v regulator.
I bought a generic automatic LiPo charger from a local RC shop which can 
do 1 to 4 cells and operates from a 12v supply.

-- 
Rob, VK6UFO, VK6RN

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