Remington MB-200 trimmer DIY Battery replacement (rechargeable)

Replacing the weak battery on a MB-200 Remington trimmer. Use only branded AA Ni-MH batteries Duracell or Energizer. As mentioned, do not leave these Ni-MH batteries for more than 1+ hour in a charger, and don't leave the charger unattended, for your safety. Wait every time until the batteries are almost drained, before charging them. If the Ni-MH batteries get hot to the touch while charging, discard them and use instead Ni-Cd batteries.