Robot Vacuum Battery Replacement

[purchark]

New batteries need a full discharge + recharge cycle before the charge percentage is accurate. When it hits 100% you still need to wait some number of hours, so probably just leave it overnight and check the next day how it works. Also, clean the contacts on the vacuum and base with isopropyl alcohol.

The batteries from ali could be junk, it’s possible to test them, but you would need a suitable load/tester.

[purchark]

For anyone getting a new battery from either source, compare the pin-out and if you can, the polarity, against the original battery…

Wyze Robot Vacuum Battery issues

One of the reviews mentions “Fried our vacuum”. Have you tried going back to the old battery to make sure it can still start-up/run properly? One thing I would do is check the voltage and polarity on the new battery compared to the old one. So if you have a basic multi-meter, check that. Though I would think a bad battery would not work at all or worse, break the vacuum like it did this particular reviewer. I would not expect reverse polarity would work at all, probably trip the battery safe…

[tusculumgolfer]

I’ve done this over a couple days, leaving them overnight to charge and same thing. The vacuums do run correctly until they die. Based off other’s experiences, seems like I just got weak/bad batteries. Ugh, off to amazon I go to hopefully get better batteries.

[purchark]

Taking the wrapper-off and seeing what batteries are inside may give some insight. It might be worth trying to get a refund if the Amazon battery works great.

[TomG]

@tusculumgolfer

AliExpress

AliExpress has been great when I have an issue with their products. They want video proof for some reason. If you follow their instructions you will receive a refund. Since it is a Lithium battery they most likely won’t want it back. Some of the items I had issues with required returning them on AliExpress’s dime.
I have a spare battery that I should test out. Too late to return it.

[johnnymets]

I’ve been reading the thread. My vacuum was shutting off when in the middle of a cleaning. Then I bought the battery from AliExpress and having the same problem. Does the Amazon battery actually work, or are people still having problems?

[purchark]

There are several batteries listed here from aliexpress, which one is giving people issues?

[johnnymets]

I bought this one and it didn’t seem to work all that well

[

14.39US $ 48% OFF|14.8V lithium battery,4800mAh,6800mAh,9800mAh,12800mAh, For Mijia STYTJO2YM Yunmi MVVO1 JG JX37/STYTJ02YM, Haier JX37, JX59| |
aliexpress.us

](https://www.aliexpress.us/item/3256805882470901.html?spm=a2g0n.order_detail.order_detail_item.4.68a4f19cICDQwx&gatewayAdapt=glo2usa)

John

| purchark
May 19 |

• | - |

There are several batteries listed here from aliexpress, which one is giving people issues?

(Attachment 14-8V-lithium-battery-4800mAh-6800mAh-9800mAh-12800mAh-For-Mijia-STYTJO2YM-Yunmi-MVVO1-JG-JX37-STYTJ02YM.webp is missing)

[purchark]

The Amazon battery just has that reverse polarity (I think, not confirmed) issue. So a multimeter should let you check that, compare pin-out with the original battery.

Here is the pin-out & voltages for the original battery…

• Red is positive 16.28v (4.07v/cell) in reference to the black and white wire. The voltage will vary, the max is 16.8v, the minimum about 12v.
• Black is assumed to be negative/common wire.
• White is assumed to be a signal wire that is “pulled-low”.
• Since Black+White is 0v, I can measure the resistance, it was 9 kΩ.

[purchark]

Battery Specialty Store Store.

Does not help that they lie about battery capacity. Are they combining the capacity of all the batteries in SERIES to come up with that? If so, 2800mAh is only really 700mAh.

Which “Color” did you choose?

Anyone know off-hand what the runtime is with the original brand new battery with medium suction? (so I can come up with an approximate power usage)

[Paycheck]

Any updates on which battery is the best replacement?

[Lion7718]

So far, I’ve had no issues with the one from Cityork.

[krisakins]

How long until we just say that Wyze products are junk and their customer service is abhorrent? This is crazy that so many people are finding out the battery gives out after two years, and Wyze has zero support to help with a replacement. Instead we’re forced to spend hours seeking out third party batteries made from China at the risk of breaking the device altogether. This is nuts, I’m sad I bought this. I had believed in Wyze once, no more.

[agentrudy]

Do you know if replacing the battery wipes your current map?

[Lion7718]

No it won’t, that info is in the app.

[No_Smoking]

Has anyone wishlisted “official wyze” battery replacements?
I just bought one for $99 and so far, think it’s pretty good for the price. But would be a shame to hassle with a dead battery. Only makes sense to sell replacements for its customers.

[Paycheck]

I picked up the Cityork battery and it’s doing great so far. Still have an issue with the vac bumping itself off the charger just enough to disconnect it.

[wintronics_99]

I just bought this battery from Amazon… It is a tight fit in the battery compartment, and has to be done without the original case. Otherwise, it works perfect and is plug n play.

ZTHY New Vacuum Battery… Amazon.com: ZTHY New Vacuum Battery Replacement for Viomi V3, Viomi V3 PRO,Mijia 2, STYTJ02YM, VIOMI V2 Pro, VIOMI V-RVCLM26B, V-RVCLMB21B, VXVC01-JG Robot Vacuum Cleaner Model: 5465V202 14.4V 4500mAh : Home & Kitchen

[TomG]

It even comes with.a screwdriver to remove the battery cover. +1

Most likely it has instructions too, but if not, I posted how to replace the battery elsewhere.

[novell2nt]

Thanks TomG

[Lion7718] posted a link to a battery replacement on Amazon and when I click on that one it points to a 6200mAh battery.

What do you think? Is it worth a try?