My hoveround MPV5 will not operate. fully charged battery charger light turns green. the brakes are in run position and when the unit is turned on the charge bar just flashes and the chair will not operate. ANY IDEAS?

Easy to fit and easy to buy.

Hoveround MPV5 Wheelchair Batteries (Replacement)

Battery Sharks https://www.batterysharks.com > mpv5_b12-35_x2

The Hoveround MPV5 wheelchair requires 2 batteries - SP12-35 NB (12 V 35 AH). Please note that you need to use all existing cables and hardware from your ...
US$110.98 · ‎In stock

12V 35Ah SLA Battery Replacement for Hoveround MPV5

Walmart https://www.walmart.com > 12V-35Ah-SLA-Battery-R...

Product details · ML35-12 SLA is a 12V 35AH Sealed Lead Acid (SLA) rechargeable maintenance free battery, Pack of 2 - UL Certified · Dimensions: 7.76 inches x ...
Assembled Product Dimensions (L x W x H): 7....
Assembled Product Weight: 48 lb "); background-repeat: repeat-x; display: inline-block; overflow: hidden; position: relative; background-size: 14px 11.4px; height: 11.4px; width: 68px;">"); background-repeat: repeat-x; display: block; background-size: 14px 11.4px; height: 11.4px; width: 62px;"> Rating: 4.3 · ‎6 reviews · ‎US$149.99 · ‎In stock

Replacement Batteries for All Hoveround Power ...

ezmobilitybattery.com https://www.ezmobilitybattery.com > hoveround-whee...

Hoveround · Hoveround MPV4 Power Wheelchair Replacement Battery (2 Batteries) · Hoveround MPV5 Power Wheelchair Replacement Battery (2 Batteries) · Hoveround ...

Hoveround MPV5 12V 35Ah Battery (2 Pack)

Raion Group https://www.raiongroup.com > hoveround-mpv5-12v-...

This Raion Power RG12350FP mobility scooter battery pack is a direct OEM replacement for your existing Hoveround MPV5 batteries (12V 35Ah).
US$119.95 · ‎In stock

According to manual. (https://www.hoveround.com/Hoveround/media/Document-Library/D82008753R-MPV5-Owners-Manual.pdf)
4 flashes: The right hand motor has a bad connection.

Other codes...
New VSI Controller 1 flash: The battery needs charging or there is a bad connection to the battery. Try charging the battery. 2 flashes: The left hand motor has a bad connection. 3 flashes: The left hand motor has a short circuit to a battery connection. 4 flashes: The right hand motor has a bad connection. 5 flashes: The right hand motor has a short circuit to a battery connection. 7 flashes: A joystick fault is indicted. Make sure that the joystick is in the center position before switching on the controller. 8 flashes: A controller fault is indicated. 9 flashes: Problem with the brake circuit. Check that the manual release levers are in the drive position. 10 flashes: An excessive voltage has been applied to the controller. This is usually caused by a poor battery connection. Speed Bar Cycling: Controller locked. Speed Gauge Cycling: Check if battery charger is still connected to controller or controller fault.

It could be charger issue or battery issue.
You can try this charger here: https://chargerbuy.com/products/charger-for-hoveround-mpv5-power-chair It's UL certified.

Before charging, make sure the unit is turned off. Connect the charger to the wall outlet first and then to the chair. Check that the battery cables are attached fully to the control box. Turn on charger. After charging, remove charger and verify the unit is fully in gear. The levers must be fully in the up position. If the lights still flash, some wiring is probably loose, or the drives are not fully engaged.

Replace the batteries and charge before use then charge nightly for 20 days Use the chair daily so you can get a good charge nightly to get the batteries operating at 100% After the 20 days If you don't use the chair daily always store fully charged and then charge once a week overnight. Should work fine once you get the new batteries in You will need to get 2 U1 batteries for your chair do not get Wally World or automotive batteries You must replace with sealed deep cycle batteries made for power chairs Hope this helps

Angel the charger light should only turn green when the chair is fully charged. If you know the chair isn't fully charged then there is a problem with the charging system. if the circuit board in the joystick got wet then that is a serious problem. If you have a voltmeter you can check the battery voltage thru the charging port located under the front of your joystick Set the meter to 200 volts dc and plug the leads into the 2 outter holes of the charger port. Fully charged you should read 27-30 volts if you aren't getting any reading then the batteries are completly dead or there is a problem with the charging circuit (the reason you are getting a green light on the charger) The joystick will have to be replaced sorry If Medicare paid for your chair then they will pay 80% of the repair costs to get your chair working again If they did contact Roadrunner Mobility @ 1-800-467-2668 to get it fixed thru Medicare Hope this helps

If you plug the charger into the wall, turn on the power switch and the light comes on, the charger should be working properly. Here is a way to test it-
Attach the charger that came with the power chair to the power chair controller firmly and turn the power chair on, while the charger is running. What should happen:the lights on the controller will scroll back and forth. If this does NOT happen and you can confirm the charger is turned on, the charger handle is fully seated inside the controller receptacle and the wall outlet has power, then the charger may have a problem and needs to be replaced.

If the charger is OK, then there may be a problem with the batteries. Here are some sypmtoms:
1-You connect the charger but the light on the charger never goes red, it just stays green.
2-You connect the charger but the light goes from red to green VERY fast.
3-The charger light goes from red to green but when you disconnect the charger and press the power button on the controller, you only have one flashing red light, or the batteries drain within just a few minutes of use.
4-The power chair has been stored or sitting idle for several months.
5- The power chair has been connected to the charger 24-7 for several months.
Any of the above examples indicates that the batteries are oxidized or damaged and will most likely need to be replaced. The MPV5 takes two, U1 12 volt 33 amp batteries which can be purchased at any battery warehouse store like Interstate Batteries or Batteries Plus.
Good luck!

Firstly, it is bad news to use an extension cord with the charger as it can get very hot. It will sometimes take 8-12 hours to get a full charge on the batteries. If the light does not go to green on the charger, the batteries may be damaged and not able to take a charge. This is especially true if the Power chair was stored after your father in law died; the gel in the batteries may have gone solid. The lights on the controller will go left to right then back if the charger is connected properly.
The brake release knobs both need to be in the UP/DRIVE position for the motors to engage.

If the power chair was stored for a while, the batteries may have gone bad. There is a gel inside them that needs to be put on a current regularly or it will solidify. When you connect the charger, you get a green light because it senses the batteries are full; unfortunately they are full of crud, not power. Try replacing the batteries to see if that solves the issue. You can probably take them to an auto parts store or Interstate Batteries to have them volt tested. The type of battery you need is a U1, 12volt, 33amp and you will need 2 of them.
Good luck!

need to have the batteries load tested, sounds like dead cell in one or both batteries