BMW E90/91/92/93 as well as many BMW key fobs from the early 2000's. BMW E39 and E46 keys (Commonly Known as Diamond Keys). BMW had a different shape PCB leg mount put on the their batteries (which you can't buy) but this just requires a little modification.
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Mini GPS Locator AntiLost Alarm Wallet Keychain Smart Tag Bluetooth-Compatible Tracer Keychain Dog Pet Child Tracker Key Finder
Aliexpress UK
Eunicell batteries are thoroughly tested and checked for safety and quality. Eunicell 3 volt button coin cell batteries. Shelf life: 10 years.
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New 1100mAh AHA11111008 VFAD Battery GPS Battery For TomTom 4FL50 4FL60 Go5000 GO5100 Go6000 GO6100 PRO TRUCK 525 GPS DVR
Aliexpress UK
Eunicell batteries are thoroughly tested and checked for safety and quality. Eunicell 3 volt button coin cell batteries. Shelf life: 10 years.
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Original V168 Max GPS Battery 7.4V 3000mAh For V168 PROMax With Screen Type-C Charge Port Battery V168 Max Accessories Parts
Aliexpress UK
Eunicell batteries are thoroughly tested and checked for safety and quality. Eunicell 3 volt button coin cell batteries. Shelf life: 10 years.
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Brand-New Watch Battery 361-00140-01 For Garmin Forerunner 55 / Forerunner 158 GPS Watch Replacement Bateria + Tools
Aliexpress UK
Energizer CR2025 lithium battery. Much more than just watch batteries, Energizer coin and button batteries are also ideal for remotes, battery alarm clocks and many other devices. Ink Jungle. Covered by full manufacturer’s warranty.
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T-Rex 3 Military Grade 1000mAh Battery Smart Watch 10ATM Waterproof GPS Compass Altimeter Call AMOLED Men Swim Sports Smartwatch
Aliexpress UK
Easy to Install – Standard CR2016 size fits perfectly into compatible devices. CR2016, DL2016, BR2016, ECR2016, KCR2016, 280-202, 280-204 (and other equivalent models). Car key fobs. 3V Lithium Power – Stable output for consistent performance.
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New T-Rex 3 Men Swim 1000mAh Battery Smart Watch IP69K&10ATM Waterproof GPS Compass Altimeter Call AMOLED Outdoors Sport Watches
Aliexpress UK
Reusability: Single Use.
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Mini GPS Locator Anti Lost Alarm Wallet Keychain Smart Tag Bluetooth GPS Tracker For iPhone Find My App ios GPS Finder
Aliexpress UK
2x CR1616 Batteries For.
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100/50pcs Metal Blank Keyring Keychain Split Rings Keyfob Key Rings Lobster Clasp KeyChain Key Pendant Ring Stainless Steel Ring
Aliexpress UK