thunder dragon 1987, Ford Escort 1992 - possible to get new batteries?

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Hi, I built 3 Tamiya 1/10 scale RC cars (rs escort, dragon and a Peugeot 306) when I was young but all have dead batteries which only give partial power for about a minute.


Is it possible to buy batteries for models like this? Do the replacement batteries work?

Or should I try and sell them and buy a new rc car?

Would there be interest for these models in the for sale section? all models are complete with instructions, boxes, controllers etc. kits are numbers #58112 , 58073,

58224.


The car's are in england, near Reading. I am visiting next week so it would be good to deal with it then.