This is an excellent product. Despite other reviews, in September in the UK, the Freeloader reached three-quarters charge in just a few hours and was completely full with a top up the next day. It took a blackberry from virtually empty to 95% charge in an afternoon - with some charge left in it. It doesn't come with a micro USB plug suitable for new Blackberries, but a certain well known auction site has a mini to micro USB adaptor for £2.99! This will be an excellent product for a safari (hopefully).
One word of warning - check the Freeloader website for camera battery compatibility for the CamCaddy which comes bundled with the Freeloader.