This guide will show you how to open up and dismantle the Philips Sonicare 2 Series electric toothbrush to repair it by replacing its internal rechargeable battery pack. These are great value toothbrushes so are well worth repairing.
This battery replacement guide covers the Sonicare 2 Series models from Philips. These are marked with HX numbers starting HX62. This includes models marked as HX6210, HX6220, HX6230, HX6240 and HX6250 from the EssentialClean and DailyClean ranges. You can find the HX number of your toothbrush on the bottom of the handle as indicated in the photo below (click photo to enlarge).
For Sonicare toothbrushes with other HX numbers the battery replacement procedure is slightly different so please see our other toothbrush battery replacement guides for those.
The basic method is:
- Open and dismantle handle
- De-solder PCB connections for original battery
- Remove and replace battery
- Solder in new battery
- Reassemble handle
The HX6200 series battery replacement process is documented in detail below along with lots of photos. Click on any picture to enlarge it.
Any damage or injury to yourself, your toothbrush or anything else is entirely your responsibility. This guide is for professional, educational usage only and is offered without guarantee or liability. Batteries can be dangerous if short-circuited or mis-handled, and can overheat if you do not observe all handling precautions. Always wear safety glasses when soldering and cutting.
Tools, Parts & Equipment
- Philips Sonicare 2 Series electric toothbrush
- Soldering iron with chisel tip: Electronics grade (about 18-25 watt)
- Solder: Lead-free silver solder with a flux core is recommended
- Solder sucker (also known as a desoldering pump) and/or desoldering braid/wick
- Small flat-bladed screwdriver: 2 to 4mm wide
- Torx T-8 size screwdriver: Support us by buying yours from ToothbrushBattery.com here
- Small sharp scissors
- Adhesive putty such as Blu Tack to hold the toothbrush to the work surface
- Replacement Ni-MH battery pack: Support us by buying yours from ToothbrushBattery.com here
To start with, remove the brush head from the top of the handle by pulling it straight off.
Remove the screw from inside the centre of the base cap (arrowed below) using a T-8 size torx screwdriver. If you don’t have one of these please support us in writing these repair guides by buying your screwdriver from us at ToothbrushBattery.com here. Some versions of the 2 series might not have a screw fitted.
With the screw removed you can now pull the base cap off. You might be able to do this by hand but if there is a build-up of dried toothpaste in the seam you might need to use a blunt metal or plastic spudger, or similar tool to start prying the cap off.
Store the cap and the screw safely.
Looking inside the bottom of the handle you can see the two white clips holding the internals in place (arrowed below).
While applying light pressure to the metal shaft at the top of the toothbrush use a flat-bladed screwdriver to release each clip in turn by moving it away from the internal wall of the handle casing.
With both clips released you can start to push the internals of the toothbrush out from the top end.
Fully remove the inner workings from the handle casing.
With the toothbrush open, take a look at the grey rubber seal around the metal shaft. There is a solid grey collar which retains the soft grey seal. If this seal is mouldy, hardened or split it can be replaced with one of our new Sonicare shaft seals to stop water getting past the shaft and into the motor and electronics.
Unclip the beige rubber cover from the PCB.
Turn the mechanism over, being careful not to press down on the power button.
Remove the rubber cover from the battery.
Time to get your soldering iron warmed up now! We recommend using an electronics-grade iron of around 18 to 25W with a chisel tip.
Locate the JP1 connection on the PCB (arrowed below).
Use a solder sucker/desoldering braid to remove the solder from JP1 and break the connection. This will electrically disconnect the battery so if you slip on the next step you won’t cause a short-circuit and damage any components.
Locate the positive (Vbat+ Ni) and negative (Vbat- Ni) solder points for the battery connections.
Remove as much solder from each connection as you can. If this goes well you will be able to see through the holes and the metal tags will be able to move within the holes, as seen on Vbat+ pictured below. If there is still a small amount of solder remaining in the hole as seen on Vbat- below, you will need to reheat that connection while you remove the battery.
You can push down on the battery through the slots in the red frame to start removing it, or use a screwdriver while reheating the solder connections.
Remove the battery from its holder.
Go back and clean up the solder holes as best you can. Don’t worry if you can’t get all the solder out as you can reheat it during installation of the new pack.
Compare the original battery to its replacement as shown below. Please support us in writing these repair guides by buying your new battery from us at ToothbrushBattery.com
Metal joining strip:
As indicated by the black plastic disc on the end of one cell, you can see that on the original orange battery back the positive terminal is on the left and on the new pack the positive terminal is on the right.
You can reverse the polarity of the new pack by first folding the metal tags out horizontally.
Turn the pack over.
Fold the tags back on themselves so they are pointing upwards.
You can see that the positive terminals on both packs are now on the left.
Using a small pair of sharp scissors trim down each solder tag so it is slightly longer than those on the original pack. Being slightly longer will make it easier when installing the new battery. Be careful not to short out the pack with the scissors. You might want to fold each tag down horizontally while you are cutting the other one to avoid accidental short-circuits.
Start very carefully cutting in from the side of one solder tag using the tip of your scissors. You might want to cut only one third of the way in to avoid accidentally cutting the tag right off.
Cut down from the top of the tag so that you are removing slightly more than half the material. Don’t worry if it is slightly too wide as you can trim more off the tip later.
Trim the other tag in the same way.
The remaining tag material is slightly offset to the right, so you can adjust the whole tag where the folded crease is to point the tags slightly off to the left. This will mean that the tips of the tags are above the centre of the cells.
Fold the tags away from the battery slightly to help with pack insertion.
Lower the new pack into the battery holder tags first, so the tips of the tags go through the PCB holes.
Solder the battery tags to the PCB
Rejoin the two JP1 solder pads with solder.
You can now test the new battery by holding the toothbrush firmly and pressing the power button arrowed below. The motor should start running.
If the brush does not switch on you might need to hold the assembly on the charger for 10 seconds to reset the circuitry. Then remove the brush from the charger and switch it on again.
Fit the rubber cover back on the PCB.
Fit the rubber cover back over the battery.
Slide the assembly back inside the handle casing until the clips click ito place. With the button and battery symbol on the casing facing upwards the internals need to have the PCB on the upper side.
Fit the base cap back on the bottom of the handle. With the handle button upwards the text on the base cap needs to be upright.
Fit the screw back into the base cap. To avoid cross-threading it gently wind the screw back anti-clockwise until you feel it drop into its groove.
You now have a fully reassembled Sonicare 2 Series electric toothbrush!
Put your toothbrush on for a full charge, then it is ready to use.
Please recycle your old battery. It is safest to cut off or fold over the solder tags then put sticky tape over the end to avoid short-circuits. You can then take it to your local supermarket battery collection point or civic recycling facility.
Please leave any questions, tips or suggestions about this Philips Sonicare HX6200 battery replacement guide below. Happy brushing!