Unfortunately, you cannot change the internal battery of a Lenco DVP, MES or TDV yourself. In this case, the battery is an internal component that cannot easily be changed by you from the outside.
Which party you can turn to for changing the battery depends on whether you still have warranty.
In case you still have warranty:
Is the battery defective or no longer functioning properly in your opinion and do you still have warranty? Then it is best to return to the shop where you bought the product. They can then work with you to find a suitable solution.
In case you no longer have warranty:
If the battery is defective or no longer functions properly in your opinion and you no longer have a warranty, you can register the item for out-of-warranty repair on our website.