Hitachi NR83A2 2" To 3 1/4" Full Head Framer with Depth of Drive "staples ca" Questions

...staples at at time and they don't go in at all only the first one goes in, other times it just makes a noise of air going in and nothing happens. ...

where can i buy batteries and a charger for my dynamic d90 Jegs11 Keynexions on eBay UK has mains-adaptors and car power-leads for The Dynamik D90S (gas-powered nail-gun); EU 2-pin, US/CA 2-pin, ...