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1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsTesla is the buyer in LG Energy Solution’s reported $4.3 billion agreement for U.S.-made lithium iron phosphate (LFP) battery cells. The cells are intended for Tesla Megapack 3 energy-storage systems made in Houston—not Tesla passenger cars. LG’s Lansing, Michigan, facility began production in August 2026, while the reported Tesla supply period begins August 1, 2027.
What the $4.3 billion agreement covers
The U.S. Department of the Interior identified Tesla as the customer for LG Energy Solution’s agreement involving LFP prismatic cells manufactured in Lansing, Michigan. The department described the cells as American-made and said they will power Tesla Megapack 3 systems produced in Houston. Yonhap and Reuters reported the agreement’s value as $4.3 billion. Yonhap’s March 17, 2026 report quotes the department: “American-made cells will power Tesla’s Megapack 3 energy storage systems produced in Houston, creating a robust domestic battery supply chain.”
LG’s original customer disclosure in July 2025 did not name the buyer, according to Yonhap and Reuters. The later government identification clarified that the customer is Tesla. The available descriptions do not establish that Tesla owns the Lansing facility or that the arrangement is a joint venture; LG describes it as its own facility.
These batteries are for grid storage, not Tesla cars
Megapack is Tesla’s large-scale energy-storage system. In this agreement, LG’s cells are intended for Megapack 3 units produced in Houston, making the deal part of the stationary energy-storage supply chain. The government statement does not describe the cells as supplies for Tesla passenger vehicles.
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#1 Best Overall
- Premium Batteries by SHI (Smarter Home Ideas) Replacement is compatible with Tesla model X smart key fobs ONLY.
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LFP is a lithium-ion battery chemistry using lithium iron phosphate as its cathode material. The cells in this agreement are described as prismatic, referring to their rectangular cell format. Those descriptions identify the cell type; they do not disclose the system’s design, battery performance, or the number of cells Tesla will receive.
Plant production and Tesla deliveries have different timelines
| Milestone | What is reported |
|---|---|
| Lansing facility production | LG says production began August 18, 2026; its announcement was published August 19, 2026. LG Energy Solution’s announcement |
| Reported Tesla supply period | August 1, 2027, through July 31, 2030, according to Yonhap’s report of LG’s disclosed supply period. Yonhap |
The Lansing line starting production in 2026 does not mean Tesla’s reported supply period started then. The facility serves more than one cell market: LG says it produces LFP cells for energy-storage systems and nickel manganese cobalt (NMC) cells for Toyota vehicles. Its Vertech division integrates storage cells into complete systems for utility, grid-scale, and commercial and industrial uses. LG has not disclosed how much Lansing output is allocated to Tesla.
Rank #2
- Keyless entry remote fob not included: This listing is for OEM Original replacement batteries as provided by Manufacturer for (Smart Key) Remote Fobs. Bundle of Two (2) CR2354 Remote Fob Battery and Opening/Pry Tool.
- Compatible with Tesla Model X and Model X Plaid only
- Not compatible with Model S, 3, or Y
- OEM-Quality- Easy Process: Includes dual-purpose opening tool to help open the remote control (without scratching or damaging the remote control case) and remove the battery.
- Avoid a Service Appointment for Battery Replacement: Remote reprogramming is not required and Battery replacement is simple.
What the headline value does—and does not—tell you
The reported $4.3 billion is the agreement’s headline value, but it is not enough to work out a per-cell price, Tesla’s contracted volume, or the share of Lansing production reserved for the company. Those terms are not stated in the cited reports. The sources also do not give delivery milestones beyond the reported supply window, so the headline value should not be treated as a disclosed annual payment or a measure of Tesla’s share of plant capacity.
LG says the Lansing facility is designed to reach more than 35 GWh of annual battery-making capacity at full scale and expects 1,700 employees at full-scale production. These are company-stated facility targets, not current output or headcount, and neither figure is a Tesla-specific allocation. LG Energy Solution’s August 2026 announcement
Rank #3
- Select Your Vehicle Above**
- Car Key Battery Replacement for the 2012-2025 Tesla Model S. Includes two (2) BatteryGuru CR2032 3V car remote batteries.
- Compatible with Tesla Model S, 3 and Y. NOT compatible with the Model X.
- Recommended before or after seeing the "Key battery needs replacing" message on the cars dashboard. NOT COMPATIBLE WITH MODEL X SUV.
- Avoid a service appointment for a replacement battery. This is an easy replacement and install.
Why the deal matters to U.S. battery supply
The agreement connects U.S. cell manufacturing in Lansing with Megapack production in Houston, while serving the energy-storage market rather than Tesla’s vehicle lineup. That creates a domestic supply route for at least the cells covered by the reported arrangement. It does not, on the information disclosed, establish how much of Tesla’s demand it will cover or whether all cells made at Lansing will remain in the United States.
Quick Recap
Best Value
- Compatible with Tesla Model X and Model X Plaid only
- Not compatible with Model S, 3, or Y
- Avoid expensive dealer service charges and easily replace your key fob battery yourself - only takes a few minutes - no programming required
- Easy do-it-yourself guide to changing your key fob battery in the description
- Includes (2) original premium Deluxe CR2354 3V batteries. Does not include actual key fob
Rank #4
- PERFECT FIT FOR TESLA MODEL X – This 2-pack CR2354 3V lithium battery for Tesla Model X is designed for easy replacement in your Tesla key fob.
- OEM QUALITY YOU CAN TRUST – Our CR2354 3V battery matches the original Tesla Model X key fob battery, ensuring reliability and longevity.
- QUICK & EASY INSTALLATION – Replace your Tesla key fob battery without hassle and get your Tesla key working like new.
- STEP-BY-STEP INSTALL VIDEO – Follow our simple video tutorial to replace your Tesla key fob battery in minutes and get your Tesla car key functioning properly.
- DESIGNED SPECIFICALLY FOR TESLA MODEL X – These CR2354 3V lithium batteries are tailored for use with the Tesla Model X key fob, ensuring a perfect fit.
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