Here's how to fix and swap the built-in rechargeable battery of your Samson Expedition Express. But first, you need to buy your replacement battery. I bought mine from Thomann. Kindly, check first if Thomann is able to deliver to your place before you order.
Here's the link if you're interested to buy the replacement battery: https://www.thomann.de/gb/thomann_battery_12v_26ah.htm?partner_id=95373
It is a straight-forward swap. Just unscrew the back cover of your Samson Expedition Express and then be careful with the wires when lifting the cover. Then, there's a protective sheet that you need to remove and it is secured by 4 screws. A bit bigger from the ones the you've taken out. So you might swap screwdriver to remove these.
Then, the tricky bit is the battery itself. The good news is that it has a strap so you can pull it out. But just be gentle and careful because of the wire and there's like a sticky substance that they used.
The polarity is colour-coded and there's a sticker so that you don't get confused about it and put the wires wrong way around.
Last is to put things back together and cover it. Put back the screws as well and your Samson Expedition Express is as good as new again.
