New Premium Mobile/SmartPhone Battery Replacements CS-MUM421XL
SKU: 76013529653

New Premium Mobile/SmartPhone Battery Replacements CS-MUM421XL

$17.05 $18.95
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Ships within 48 hours · Estimated delivery Jul 5 - Jul 10

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Description

New Premium Mobile/SmartPhone Battery Replacements CS-MUM421XLOverview Categories Mobile SmartPhone Battery Compatibles # View Full List of OEM numbers and models here Brand Cameron Sino Voltage 3. 85V Chemistry Li Polymer Capacity 4000mAh Dimensions 73. 70 x 66. 60 x 4. 40 mm Weight 80. 0g Bar Code 4894128123118 Type Brand New Original Battery Warranty 1 Year Performance Guaranteed to Meet or Exceed Original Performance Certifications ISO9001, RoHS, and CE * Please make sure that the device manufacturer, The

Overview
Categories
Mobile/SmartPhone Battery
Compatibles #
View Full List of OEM numbers and models here
Brand
Cameron Sino
Voltage
3.85V
Chemistry
Li-Polymer
Capacity
4000mAh
Dimensions
73.70 x 66.60 x 4.40 mm
Weight
80.0g
Bar Code
4894128123118
Type
Brand New Original Battery
Warranty
1 Year
Performance
Guaranteed to Meet or Exceed Original Performance
Certifications
ISO9001, RoHS, and CE

* Please make sure that the device manufacturer, The model number and also the battery part number are all listed in our product details. Some manufacturers have more than one battery type fitted in like models. We recommend that you remove the original battery before ordering to confirm this. If you are not sure we may be able to confirm for you.

* Please be advised that some higher capacity batteries are larger than the standard battery from the manufacturers. Please make sure that your model number is shown in the information above before ordering. If there is any doubt contact us first and we can advise if this is a suitable replacement for your device.

Description

Mobile/SmartPhone Battery Articles & Tips

iTEKcanada Offers Free Shipping to All of Canada. ( Free Shipping for All Order over 59$+ ) !
The CS-MUM421XL Mobile/SmartPhone Battery will solve your battery problems or provide you with a spare battery. The CS-MUM421XL Mobile/SmartPhone Battery comes with a 30 day money back guarantee and 1 Year Warranty. Once we have received your new order for the CS-MUM421XL Mobile/SmartPhone Battery, it will be processed within 24-48 hours or on the next business day via CanadaPost Mail.

Purchasing Mobile/SmartPhone Battery
Mobile/SmartPhone Battery by iTEKcanada.com are usually lower in price and usually exceed the performance of OEM Mobile/SmartPhone Battery. Many of iTEKcanada.com’s Mobile/SmartPhone Battery use the same battery cells as OEM batteries.

What is mAh / Wh?
These ratings show battery`s capacity. Think of them as gas in your car tank, the bigger the tank, the more fuel it will carry and your car will drive longer. Same with these batteries, the higher the mAh/Wh, the longer your device will run between recharges.

Will your higher capacity (mAh/Wh) Mobile/SmartPhone Battery work in my device, even though my original battery has a smaller rating?
Definitely! Our batteries are designed to be 100% replacements for original batteries. Higher mAh/Wh rating means longer run time between recharges. The higher the rating the slower it will take for the batteries to drain down. Meaning you will get longer talk time with a higher mAh rating. In other word, higher is the mAh number, better it’ll be for your device.

Quality and Safety
This battery contains advanced technical components and has been tested according to strict CE safety standards. The battery contains a chip that prevents overcharging and short circuiting. Next to this the battery is made from high quality cells that do not suffer from a so-called 'memory effect'.'

Factory Fresh
Batteries lose performance over their lifetime, even when they are not used. Many importers and resellers store their batteries in stock for a long time before they are sold. iTEKcanada.com sends products almost directly from the factory, so you are sure that you will get a brand new high quality battery!

Compatible Devices & Replacements

Compatible Batteries

Device Manufacturer
Battery Number
Xiaomi
BM4A

Compatible Devices

Device
Manufacturer
Model
Mobile/SmartPhone Battery
Xiaomi
2016020
Mobile/SmartPhone Battery
Xiaomi
2016021
Mobile/SmartPhone Battery
Xiaomi
Redmi Pro
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 76013529653

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4.7 ★★★★★
Based on 482 reviews
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Product Reviews
C
Verified Purchase
cam
Whiting, US
★★★★★ 3
Not Chuck-It Durable
Color: Orange & Blue Squirrel, Size: 4.7 inches (1 Pack), Color: Orange & Blue Squirrel, Size: 4.7 inches (1 Pack)
Sadly only lasted an hour. My dog likes to pull apart toys over the course of a few months, with the exception of Chuck-It toys. They usually never get destroyed by him. I think its a good product but if you are looking for the durability like other toys from Chuck It - just wanted to share this is not the toy for you! Made him happy so not regretful of buying it, just wish it lasted longer. Here is him posing with it after he took bites of it like it was an apple.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
L
Verified Purchase
Lance Boudreaux
Draper, US
★★★★★ 5
Nice indoor toy
Color: Orange & Blue Roller, Size: 7.5 inches (1 Pack)
Great indoor dog toy. Just pick it up after use if your dog is a chewer like mine is.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
A
Verified Purchase
Amazon Customer
Port Orchard, US
★★★★★ 1
1st one lasted over 3yrs, 2nd started falling apart in less than a week....
Color: Orange & Blue Roller, Size: 7.5 inches (1 Pack), Color: Orange & Blue Roller, Size: 7.5 inches (1 Pack)
My dog really loves this toy. He’s a 5yr old border collie. He doesn’t work at tearing up his toys but he does shake his toys. I bought his 1st Chuckit it indoor football over 3yrs ago. It held up very well and had normal wear and tear I’d expect from a chuckit toy to have. It developed a small tear in fabric about 6months ago. As it was still mainly intact, I let him continue to play with it. Then the tear widened and I felt good time to replace, so I ordered one from Amazon. He was ecstatic to have a new one. I was quite disappointed though as in under a week from giving it to him(he’s always supervised during play so I do know what he does with his toys and he doesn’t work at them to tear them up) I noticed a tear down the seam that was bigger than the other one had for 6months. Over the next few days, tear widened. Now cover is completely off of inside. I’m really disappointed in the quality. I’m not sure if the quality of the toy is less than when I got his first one(which I bought in a pet store such as petsmart) or if for some reason because I purchased on amazon, they are of lesser quality. I do know for a fact as I supervise his play and with his favorite toys(and usually his spendier toys) they get put up when it’s not play time. He has his other toys that he can play with anytime. I have ran also into Kong toys (Wubba) that has come apart quickly in under a month,but those were both bought on amazon and at a retail store, so I don’t know if amazon is distributing toys of lesssr quality or if toy brands that have held up in past (Kong Wubba & this Chuckit football) are just being made of lesser quality. My dog’s style of play hasn’t changed nor has his supervision. That being said, my dog absolutely LOVES this toy. I want other users to be forewarned that I’ve had 2 of this product for my dog, they both developed a tear down seam, that eventually led to outer fabric shell coming off of the inner part of the toy. Yes my dog does shake his toys but 1st lasted over 3yrs, 2nd lasted less than a month and is in worse condition than the first. I may purchase this toy again as it’s one of his favorites just to see if the 2nd one was a fluke. Had I paid more than $6.19(I’m a prime member and it was an add on product) I most likely wouldn’t purchase a third one. I’m willing to see if the third one will last at least a yr. if it starts coming apart in less than a week again, I’ll have my answer which would be that chuckit has resorted to making their toys of lessor quality. I hope that’s not the case because they are one of only a couple of brands I hold in high regard for their good quality and durable dog toys. Please see picture. It’s his toy in less than a month. The outer material came off during play last night. It lasted less than a month from time I gave it to him to play with. 5/22/18 update. I bought him a 3rd indoor fumblr, it last almost 3 months...I ordered him a 4th one. I gave it to him Friday, today is Tuesday, his 4th one is already coming apart at the seams. When I ordered 4th fumblr, I bought 2 at the same time, they were $5.19 each(prime member add on price). I’m glad I did because now they are twice the price at now over $10. I very highly doubt I will buy another indoor fumblr unless price drops in half again. This last one that I gave him 4-5days ago, it hasn’t been his daily favorite toy. He’s maybe played with it a couple hrs each day. My dog really LOVES this toy. I’m moving my rating down to a 1 Star from 2 as this toy has consistently come apart rather quickly. I’m very disappointed in the quality of this toy. He’s 5 1/2yrs Old now. 1st fumblr last over 3yrs, he’s gone through the other 3 in under 6months...had I paid over $10 each time, I probably would’ve stopped after the 3rd fumblr came apart. as it is now, I won’t but any more fumblrs by chuckit at this price....if price drops, after he’s gone through the 5th one I have put up...I may consider it...but not at over $10 for a toy that comes apart through normal play in under 5 days...
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 4, 2017
B
Verified Purchase
Brooklyn
Pawtucket, US
★★★★★ 5
Dogs favorite toy
Color: Orange & Blue Roller, Size: 7.5 inches (1 Pack), Color: Orange & Blue Roller, Size: 7.5 inches (1 Pack)
I buy 4 of these every month for my dog. He won’t go anywhere without this ball. He sleeps with it, swims with it, goes to the vet and carries it around in his mouth to show off. It’s borderline a problem. My dog is a large breed and plays hard so I do purchase often because the strings unravel and the ball itself is foam so breaks down into little pieces after a few days of playing. I love that it is fragile on his teeth and jaw. We can play catch indoors because it is soft.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
N
Verified Purchase
NATTY
Draper, US
★★★★★ 5
Love It!
Color: Orange & Blue Fetch Ball, Size: 4.75 inches (1 Pack)
Perfect for your dog who loves to play ball indoors. It doesn’t bounce & it’s very soft. It lasted a long time for a German Shepherd who loveeess to ball all day.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 10, 2026

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