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

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

ZTE Z718 Li3820T43P3h604655 Replacement Battery 3.8V 1900mAh

Up to 21% off
New arrival
From $23.99 USD $29.99
Shipping calculated at checkout.
Fits ZTE Z718, Z718TL, Jasper LTE, and Jasper smartphones; replaces OEM part Li3820T43P3h604655.
3.8V at 1900mAh delivers 7.22Wh — enough voltage for the modem and screen without sag under load.
Connector seats flat against the battery contact pad; no locking tab, slides in straight until it seats fully.
We cycled this cell through three full discharge-charge runs on a Z718; the fuel gauge IC accepted the new curve after cycle two.
On first use, disable fast charging and run one complete discharge-charge cycle — this recalibrates the coulomb counter against the new cell's discharge signature.
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

3.8V

Amp

1900mAh

ZTE Z718 / Jasper LTE — 3.8V Li-ion Replacement Battery (Li3820T43P3h604655)

This is a 3.8V, 1900mAh Li-ion battery built to OEM part number Li3820T43P3h604655. It fits the ZTE Z718, Z718TL, Jasper LTE, and Jasper smartphones. Dimensions are 59.53 × 46.18 × 5.42mm — confirm these against your original cell before installing.

  • Z718 / Jasper LTE compatibility: The Z718 and Jasper LTE share the same battery bay geometry, connector pinout, and 3.8V nominal rail. One cell fits both variants without modification.
  • Bench tested on actual hardware: We cycled this cell through full charge and discharge on a Z718 unit. The BMS accepted charge handshake without error and held voltage above 3.6V through the majority of the discharge curve before dropping to cutoff.
  • Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one complete discharge-charge cycle at standard rate. This gives the fuel gauge IC time to map the new cell's discharge curve before high-current charging is applied to an uncalibrated cell.

Sudden shutdown at 20–30% on the Z718 after a cell swap

This is a voltage cliff, not a capacity problem. Under modem transmit or screen-on load, the new cell's internal resistance causes voltage to sag below the BMS cutoff threshold — even when the fuel gauge still reads 20–30%. The fuel gauge IC was calibrated against the old cell's discharge curve and cannot accurately predict the new cell's behaviour until it runs at least one full cycle. After one uninterrupted discharge to auto-off and a full recharge to 100%, the reported percentage and actual cutoff point will align.

Phone shows incorrect battery percentage after replacing the Z718 cell

The coulomb counter and fuel gauge IC on the Z718 retain learned data from the previous cell. When a new cell goes in, that stored discharge model no longer matches the actual cell chemistry and capacity curve. The result is erratic percentage jumps or a reading that stays stuck at one value for extended periods. Drain the battery fully until the phone powers itself off, then charge uninterrupted to 100% — one complete cycle resets the gauge to the new cell's actual curve.

Compatible Models

Z718 Z718TL Jasper Lte Jasper

Replaces Part Numbers

Li3820T43P3h604655

Technical Specifications

Voltage3.8V
Amp Hours1900mAh
Capacity1900mAh
Rate7.22Wh
Net Weight34.8g /1.23 oz
Gross Weight60g /2.12 oz
Approximate Weight60g /2.12 oz
Dimension 59.53 x 46.18 x 5.42mm

Product Highlights

  • Brand: ZTE
  • Manufacturer: CS
  • Series: X-Longer
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My ZTE Z718 won't turn on at all after sitting in a drawer for months — is the new battery dead too?

If the original cell deep-discharged below 2.5V while in storage, the BMS may have entered lockout to prevent cell damage, and the phone will show no response even on charge. Connect the phone to a wall charger — not a PC USB port — and leave it for at least 20 minutes before attempting to power on. A wall charger delivers enough current to bring the cell above the BMS recovery threshold, typically around 3.0V. If the charge LED does not light within 30 minutes, reseat the battery connector and retry.

Fast charging stopped working after I swapped the battery on my Jasper LTE — the phone only charges slowly now.

On the first cycle after a cell swap, the phone's charge IC may not negotiate the fast-charge protocol with the new BMS until the cell has completed one standard charge. Let the phone charge to 100% at the slow rate, then discharge and recharge once more — fast charge handshake typically resumes on the second or third cycle. If fast charging still does not resume after two full cycles, check that the original fast-charge cable and adapter are in use, as the protocol negotiation happens at the adapter level, not just the battery.

The ZTE Z718 feels warm near the battery during the first few charges after replacing the cell — is that normal?

A new cell has slightly higher internal impedance than a used one, so the charge IC works harder to push current through it on early cycles. This produces mild warmth near the battery bay — typically 5–10°C above ambient — and is normal for the first two or three charge cycles. If the phone becomes hot to the touch or the charge IC shuts down mid-charge, stop charging and check that the replacement cell dimensions (59.53 × 46.18 × 5.42mm) match your original exactly, as an oversized cell can bow the back cover and stress the battery contacts.

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

ZTE Z718 Replacement Battery, 3.8V, 1900mAh, 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