Available again, but $10.98 dearer than the first time, https://www.ozbargain.com.au/node/889271
Probably a promo like last time, so likely only available til sold out.
These have 21700 cells. Weight is 592g compared to the std 4.0AH pack at 683g (according to my kitchen sales). The compact is 7mm wider, about 8-9mm longer and about 16mm lower in height. Pic of both for comparison, https://files.ozbargain.com.au/upload/309005/122846/batt_com…
Reasonable stocks, but a lot of stores with nil. https://bunnings.youinstock.com.au/search/0738791
These packs have 21700 cells and are rated by Einhell at 900W.
Specs on the rest for comparison.
The 2.0 and 4.0 standard packs use 18650 cells.
The 2.5 and 5.2 packs use 20650 cells.
The 6.0 & 8.0 and the sealed 3.0 & 4.0 use 21700 cells.
Power output in watts on the batteries from Einhells website.
2.0AH 450 watts.
2.5AH 720 watts
4.0AH 900 watts
5.2AH 1260 watts
6.0AH 1350 watts
8.0AH 1350 watts
The new sealed batteries.
3.0AH 900 watts
4.0AH 900 watts.