Update edison.md (openaps#1166)

Author: GlennCoco

docs/docs/Gear Up/edison.md

@@ -36,6 +36,8 @@ Alternative, but common, higher capacity batteries include the Adafruit Lithium
 
 For people in the UK, you may find you have to shop around to find the correct battery, as shipping restrictions appears to have reduced the supply somewhat. [Pimoroni](https://shop.pimoroni.com/products/lipo-battery-pack) appear to stock the same Adafruit 2000mAh battery as mentioned above. Another source looks to be [Cool Components](https://www.coolcomponents.co.uk/en/lithium-polymer-battery-2000mah.html), but you may find shipping costs expensive. CAUTION: [RS Online](https://uk.rs-online.com/mobile/p/lithium-rechargeable-battery-packs/1251266/) sell a similar battery, but unfortunately it comes with the wrong JST connector (it comes with a 2.5mm JST XHP-2, and you need a 2mm JST PH). It is possible, however, to buy the [right connectors](https://www.technobotsonline.com/jst-ph-2mm-2-way-housing-excludes-female-pins.html) and fit them yourself (numerous 'how to' videos on YouTube).
 
+For people in Australia you can find 2000mAh, 2200mAh and 2500mAh batteries from [Little bird electronics](https://www.littlebirdelectronics.com.au/batteries/), prices are very competitive and shipping is quick. These are the same Adafruit batteries that can be obtained from the US above.
+
 ### Explorer Block antenna tuning (optional)
 
 The antenna on the Explorer Block is a strip of copper underneath the green outer coating. The antenna is labeled A1. It will have its maximum power at 868 MHz. The antenna has a line across it at one point with a label that says "915". The antenna defaults to the 868 MHz range, which is what WW pumps use. If you have a US pump, mmtune will run and tune to something near 916MHz. Even with the 868 MHz antenna, you should get half a dozen feet or more of range on average.  If you (optionally) want to boost the range of your antenna by a couple more feet, then you cut through the outer coating and the copper on that line with an X-ACTO knife. A single clean cut is sufficient, but if the cut doesn't look clean you could make two cuts and then dig out the circumscribed piece and then reseal the copper with nail polish. With that cut, the antenna will have maximum power near 915 MHz.