In this article I talk about two Xiaomi BM3L batteries I purchased for use with my Xiaomi Mi 9, already shown here on Skooter Blog. Here are their links:
- Original Battery BM47 For Xiaomi Redmi 3 3S 3X 4X Redmi3 Pro Redmi Note 4 4X Pro BN41 Xiaomi 9 M9 Mi9 BM3L Mi5s Mi 5S BM36, acquired na AliExpress, shop AliExpress Original Accessories Store Store.
- Battery Xiaomi BM3L Mi 9 Original, acquired na Shopee, shop married batteries.
Motivation and Purchasing
After just a year and a half of use, the original battery of my Xiaomi Mi 9 puffed up and pushed the back cover, taking it off, so that only my cape held it in place. So I decided to buy another battery to make the exchange. Unfortunately I don't know any place that sells batteries that are sure to be original.. I found a battery in AliExpress with good ratings and I opted for it. Purchase made in 18/11/2020, the cost of R $ 86,70, including freight.
Transporting batteries internationally is complicated. They usually come only by slower methods than the traditional ones. Nothing of ePacket, only registered packages or even unregistered. In the meantime I continued using the cell phone with a swollen battery. At one point the original battery was so full that I had to remove the cover and put it away, leaving only the cover holding the battery and the wireless charging coil. That's when I decided to buy another battery at Shopee, with local seller, to get faster. For R $ 49,90 I didn't have much faith that it was really original, but my hope was that it would at least be good enough to break a branch to the battery of the AliExpress to arrive. This purchase was in 06/12/2020.
Unboxing and Bateria and Shopee
The battery of the Shopee arrived four days after purchase. Check out the photos:
Shopee Battery Installation and Testing
To install the battery, follow the steps in iFixit guide, which is very detailed. As the cover was already removed I went straight to step 8, removing the screws from the recharge coil and the NFC antenna. I skipped the steps of 12 a 15, because I didn't see the need to take the speaker off. So I followed the step 17 to 20 to remove the battery.
I put the new battery, gluing it to the device with a double-sided tape. I replaced the coil and all screws. I just didn't glue the lid, because I wanted to make sure the battery was good even before doing that.
When turning on the device it indicated 48% load. I did the full charge and started using it normally. In the first days I didn't notice much difference, the battery seemed to last the same as the old one. With the pandemic I spend little time away from home and away from porters, so I didn't have autonomy problems. Check out some photos of the exchange:
See also the video of unboxing and parts of the installation:
But after a few weeks the performance of this battery started to get clearly worse., to the point of taking the cell phone off the charger in the morning and it is already empty in the afternoon, even with moderate use. Then it started to shut down by itself when the charge indicator was still at about 20%.
O app AccuBattery indicated an estimated capacity of only 1.649 mAh, which is only half the rated capacity of 3.300 mAh. So, not give 23/05/2021, with little more than 5 months of use, I removed the battery from the Shopee to install the battery of the AliExpress.
Unboxing AliExpress Battery Pack
The battery of the AliExpress it took two months to arrive. I also had to pay R$ 15,00 by postal order from the Post Office, since it was sent by registered mail. When it arrived at the end of January I just opened the package and then left it in storage. It came with a tool kit to help open the cell phone.. Check out unboxing in photos and video:
AliExpress Battery Installation and Testing
After four months in storage, I decided to install the battery of the AliExpress, since I concluded that the battery I bought at Shopee it was really garbage. At the time of exchange, I took the opportunity to weigh all the batteries in one precision scale to investigate. The weights were these:
after exchange, the new battery indicated a charge of 38%. Check out some pictures of the weighing and exchange procedure:
Right from the start the battery of the AliExpress already behaved much better than Xiaomi's. With it I can keep my cell phone all day without recharging, using moderately, and arrive at night still with some cargo. The cell phone also does not turn off when it arrives at the 20%, running normally until the load is zero.
The AccuBattery app indicates an estimated capacity of 2.787 mAh, or equivalent to 84% of 3.300 nominal mAh.
These are the trace information package Shopee according to their system:
10/12/2020 14:33 [[REMOVED]]Delivered to the addressee object 10/12/2020 06:37 [INDAIATUBA CTCE INDAIATUBA]Object forwarded 08/12/2020 21:25 [SAO PAULO CTE JAGUARE]Object forwarded (Standard:[REMOVED]) 08/12/2020 14:50 [SAO PAULO AGF JARDIM AMERICA]Object forwarded
Correios no longer has tracking information, so I rescued them from Muambator's records.:
10/12/2020 14:33 Entrega Efetuada CDD [REMOVED] 10/12/2020 11:38 Objeto saiu para entrega ao destinatário CDD [REMOVED] 10/12/2020 06:37 In transit to CDD [REMOVED] CCE INDAIATUBA - INDAIATUBA/SP Object forwarded 08/12/2020 21:25 In transit to CTCE INDAIATUBA - INDAIATUBA/SP CTE JAGUARE - SAO PAULO/SP Object forwarded 08/12/2020 14:50 In transit to CTE VETRI - SAO PAULO/SP AGF JARDIM AMERICA - SAO PAULO/SP Object forwarded 08/12/2020 10:03 Objeto postado AGF JARDIM AMERICA - SAO PAULO / SP
These are the trace information package AliExpress, according to the Correios system and redeemed via Muambator:
26/01/2021 13:14 Entrega Efetuada CDD [REMOVED] 26/01/2021 09:42 Objeto saiu para entrega ao destinatário CDD [REMOVED] 15/01/2021 17:21 Pagamento confirmado CENTRO INTERNACIONAL PR - CURITIBA/PR 15/01/2021 16:15 Aguardando pagamento do despacho postal UNIDADE INTERNACIONAL CURITIBA - CURITIBA/PR 15/01/2021 16:14 Liberado sem tributação UNIDADE INTERNACIONAL CURITIBA - CURITIBA/PR 14/01/2021 08:22 Recebido/Brasil UNIDADE INTERNACIONAL CURITIBA - CURITIBA/PR 26/11/2020 11:03 In transit to International Treatment Unit - BR TAIWAN Objeto encaminhado
Purchase Summary Tables
Por fim, this is the summary table of the purchase of Shopee:
|Product Name:||Battery Xiaomi BM3L Mi 9 Original|
|Name Original:||Battery Xiaomi BM3L Mi 9 Original|
|Store:||Shopee, store casadasbatteries|
|Current value:||R$ 59,90|
|Payment Method:||Elo Credit Card|
|Package Home Country:||Brazil|
|Time in Transit:||2 days|
And this is the summary table of the purchase at AliExpress:
|Product Name:||Original Battery BM47 For Xiaomi Redmi 3 3S 3X 4X Redmi3 Pro Redmi Note 4 4X Pro BN41 Xiaomi 9 M9 Mi9 BM3L Mi5s Mi 5S BM36|
|Name Original:||Original Battery BM47 For Xiaomi Redmi 3 3S 3X 4X Redmi3 Pro Redmi Note 4 4X Pro BN41 Xiaomi 9 M9 Mi9 BM3L Mi5s Mi 5S BM36|
|Store:||AliExpress Original Accessories Store Store|
|Current value:||R$ 46,82 (US$ 8,86)|
|Payment Method:||Credit Card Visa International|
|Shipping Type:||Seller’s Shipping Method|
|Shipping Fee:||R$ 38,23|
|Package Home Country:||China|
|Time in Transit:||61 days|
|Declared content:||BM3L *1|
|Type Marked Content:||–|
|Declared Value:||USD 7.50|
The battery I bought at Shopee it's garbage. I recommend going away from this store called married batteries. The ad says it's original, but it's certainly a fake battery.
The battery of the AliExpress, although it's working fine, is also false. how do i know this? Note battery serial numbers. Both the battery of the Shopee and by AliExpress has the exact same serial number: SWBM3L8C25043004. Clearly, the rogue forgers didn't even bother to vary the serial number to mask the fraud.
At least so far the battery of the AliExpress has been working correctly. if it will last, only time will tell. if it doesn't last, honestly I don't know what other battery to buy, because I don't know a reliable supplier. Maybe you'll end up trying a third-party battery unapologetically, em vez dessas que tentam se passar por originais.
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