I have lost my power supply/rectifier/transformer/charger Model: JLH082100300S for my Gardenline Cordless Hedge Trimmer, Model: AGL-0252. Can I buy a replacement and how much would it cost?
It's very possible that you will be able to buy a replacement charger - the cost will be down to the vendor - it will be to your advantage to make your own research on this subject rather than expecting others to do it for you.
One tip however - the company Einhell in Liverpool may be a source of parts for you.