Anyone recognise this battery? First post updated

It shows blue in the picture but it is more a blue-green colour.

Edits below

I'd picked up a 'new' 12 cell pack for less than $10 - so I thought 'How can I go wrong'. They are supposed to be 2400ma but I now think the no name pack manufacturer overstated the capacity. The charge to 4.2 V OK and hold voltage but measure only 1800mah approx on hobby charger.

Note to self: If the pack isn't branded, leave it alone unless it's free.

maybe SZN is short for Shenzen, China.

I recognise them. Thats Bob and Jerry.

between 1700 and 1800mah for 4 cells.

So what to do with 12 low capacity cells?