I recently bought this battery on German ebay. Capacity 15000 mAh. Self starting type, fits well inside Maestro's battery compartment.
More details here: http://www.ebay.com.au/itm/231719627139?euid=1573aace312f4f228e9344bf31d3be4d&bu=42997488100&...
Tom, SP7WT
More details here: http://www.ebay.com.au/itm/231719627139?euid=1573aace312f4f228e9344bf31d3be4d&bu=42997488100&...
Tom, SP7WT