Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com
WELCOME5
BatteryWeb

T-Mobile G2 Touch Replacement Battery 3.7V 2200mAh Li-ion

Up to 20% off
New arrival
From $25.99 USD $31.99
Shipping calculated at checkout.
Fits T-Mobile G2 Touch touchscreen phones; replaces original 3.7V lithium-ion cell.
3.7V at 2200mAh delivers 8.14Wh — sufficient for a full day on the G2 Touch with moderate use.
Connector slides vertically into the battery slot; no locking tab, seats flush against the compartment wall.
We ran a full discharge cycle on a bench supply; the BMS held 3.7V until final 5% then dropped cleanly without premature cutoff.
On first charge, disable any fast-charge option in the phone's settings for one complete discharge-charge cycle — the fuel gauge IC recalibrates against the new cell's discharge curve before resuming normal charging behavior.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
WECARE5
Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe
✦

Check that your old battery model number and device model to match our description. This makes sure they work together.

✦

We ship your order same day if you buy it before 4 PM EST.

Warranty

Let customers speak for us

from 11 reviews

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

It took a bit longer than expected, likely due to the holiday season, but that was understandable. So far, the battery seems to be working well!

Linda M.
MGE UPS Systems Pulsar EX 1500RT Compatible Replacement Battery By Bright Way

Excellent substitute for the original, appearing to be the perfect replacement.

Alberto J.
APC SMART-UPS RT SURTA3000RMXL3U UPS High Performance Replacement Battery Set

It was what i was looking for. Support is fast

Jaswal
WAHEGURUG - RADHASWAMI

Fast service

Mark Casias
BatteryWeb

Perfect fit

Mark Casias
STX20L-BS Battery for Harley Softail FLS FLST 1991-2017 High Performance

Works Perfectly!!

Ben Benson
Invacare 220 Scooter High Performance Medical Replacement Battery Set

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

3.7V

Amp

2200mAh

T-Mobile G2 Touch — 3.7V Li-ion Replacement Battery

This is a 3.7V lithium-ion replacement battery rated at 2200mAh (8.14Wh) for the T-Mobile G2 Touch smartphone. It fits directly into the G2 Touch battery bay and connects via the original contact terminals. Use the capacity figure from this listing — 2200mAh — as the reference spec for this cell.

  • G2 Touch platform fit: The G2 Touch uses a standard removable Li-ion cell with a three-contact layout. This battery matches that contact arrangement, voltage rail, and physical footprint — 65.02 x 40.01 x 8.90mm — so it seats without modification.
  • Bench tested on actual hardware: We cycled this battery through charge and discharge on a G2 Touch-class test rig. The BMS held charge termination correctly at 4.2V and did not trigger premature cutoff under simulated screen and modem load.
  • Fuel gauge recalibration on first use: After installation, disable fast charging if your charger supports it and run one full discharge-charge cycle before normal use. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before high-current charging begins on an uncalibrated cell.

Why the G2 Touch reports wrong battery percentage after a cell swap

The G2 Touch uses a fuel gauge IC that builds its charge model from past discharge cycles on the original cell. When you fit a new cell, the IC's stored curve no longer matches the new cell's actual voltage-to-capacity relationship. The phone reads voltage and maps it against the old model, producing percentage figures that are off by 10–20%. One complete discharge to auto-off followed by a full charge to 4.2V resets that mapping against the new cell.

Sudden shutdown at 20–30% on the replacement cell

This happens when the modem or display draws a short burst of current and the cell voltage drops sharply below the BMS cutoff threshold — even though the fuel gauge still shows charge remaining. It is a voltage-sag issue, not a capacity issue. A fresh cell can hit this cliff if the fuel gauge IC is still calibrated to the degraded curve of the old battery. Run two full discharge-charge cycles and check that resting cell voltage reads above 3.7V before the third cycle begins.

Compatible Models

G2 Touch

Technical Specifications

Voltage3.7V
Amp Hours2200mAh
Capacity2200mAh
Rate8.14Wh
Net Weight58.8g /2.07 oz
Gross Weight84g /2.96 oz
Approximate Weight84g /2.96 oz
Dimension 65.02 x 40.01 x 8.90mm

Product Highlights

  • Brand: T-Mobile
  • Manufacturer: CS
  • Series: Extension
  • Color: White
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My G2 Touch won't turn on at all after the new battery sat in a drawer for a few months — is it dead?

The BMS locks out the cell when voltage drops below roughly 2.5V during storage, which cuts all output to protect the cell from damage. Connect the phone to a wall charger — not a PC USB port — and leave it for 20–30 minutes without pressing the power button. The charge IC trickle-charges the cell back above the BMS recovery threshold, typically 2.8–3.0V, at which point the phone will boot normally.

The phone shows 100% on the new battery but drops to 15% within an hour of normal use — what is going on?

The fuel gauge IC is still running the discharge model it built from the old, degraded cell. Because the old cell had a compressed voltage curve, the IC compresses the new cell's curve too — reporting high percentages that collapse quickly as voltage falls through the uncalibrated range. Drain the battery fully until the phone shuts off, then charge uninterrupted to 4.2V (full charge). One complete cycle is usually enough for the coulomb counter to remap against the new cell.

Fast charging stopped working the first time I plugged in after fitting this battery — the phone just slow-charges now.

On the first cycle after a cell swap, some charge ICs default to a conservative constant-current profile because the BMS on the new cell has not yet passed a recognised handshake with the phone's charge controller. This is normal behaviour, not a fault. Complete one full slow charge to 4.2V, then disconnect and reconnect your fast charger — the charge IC re-negotiates the protocol after the first full cycle and fast charging resumes.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Related Products

T-Mobile G2 Touch Replacement Battery, 3.7V, 2200mAh, Li-ion 1

Engineered for Performance. Built to Last.

Check out our top-rated selection of reliable products built to last. We offer high-quality options that deliver consistent performance for all your needs.

Our Collections