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

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

Dell XPS M1210 Replacement Battery 11.1V 6600mAh 312-0435

Up to 19% off
New arrival
From $84.99 USD $104.99
Shipping calculated at checkout.
Fits Dell XPS M1210 notebook and replaces OEM part numbers 312-0435, 312-0436, 451-10356, 451-10357, 451-10370, 451-10371, CG036, CG039, HF674, NF343.
11.1V 6600mAh lithium-ion cell delivers 73.26Wh — restores full capacity to the XPS M1210's original run time on battery alone.
Connector slides into the battery bay with keyed alignment tabs; locking latch catches on both sides when fully seated.
We ran bench discharge cycles at 2.2A draw; BMS held regulated 11.1V throughout until final cutoff, no early shutdown or cell imbalance.
After installation, run one complete discharge down to hibernate cutoff, then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.
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

11.1V

Amp

6600mAh

Dell XPS M1210 — 11.1V Li-ion Replacement Battery (312-0435)

This is an 11.1V, 6600mAh Li-ion battery for the Dell XPS M1210 12.1-inch notebook. It replaces OEM part numbers 312-0435, 312-0436, CG036, CG039, HF674, NF343, and related variants. Capacity figure is taken from the product specification — 73.26Wh total.

  • XPS M1210 platform fit: Dell used a shared battery spec across the M1210 line — same 11.1V rail, same connector pinout, and the same BMS handshake across all OEM part variants listed above. One cell fits the full production run of that chassis.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on an M1210 unit. The BMS communicated correctly with the Dell EC, charge termination triggered at the expected voltage, and no fault codes were logged in the battery status register.
  • First-cycle calibration on the M1210: After installing this battery, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every new cell installation.

BIOS reporting battery health as poor immediately after installation

The M1210 BIOS reads health data from EEPROM registers written by the original cell during its lifetime. When a new cell installs, those registers contain data that does not match the fresh chemistry — so the BIOS flags poor health before any real degradation has occurred. This is an EEPROM mismatch, not a cell fault. Running a full discharge-to-hibernate followed by an uninterrupted charge to 100% lets the battery learn cycle rewrite those registers. After one to two complete cycles, the health flag clears and the reported status aligns with the actual cell condition.

Laptop shuts down at 20–30% charge shown on the gauge

This happens when the fuel gauge IC has not yet calibrated against the new cell's discharge curve. The old calibration data predicts a voltage cliff earlier than the new cell actually hits one — so the system shuts down while the gauge still shows charge remaining. The fix is the same calibration sequence: discharge fully to hibernate, then charge to 100% without interruption. After two full cycles, the fuel gauge IC recalibrates and the percentage readings track accurately down to the real cutoff voltage near 9V.

Compatible Models

XPS M1210

Replaces Part Numbers

312-0435 312-0436 451-10356 451-10357 451-10370 451-10371 CG036 CG039 HF674 NF343

Technical Specifications

Voltage11.1V
Amp Hours6600mAh
Capacity6600mAh
Rate73.26Wh
Net Weight419.6g /14.80 oz
Gross Weight569.6g /20.09 oz
Approximate Weight569.6g /20.09 oz
Dimension 206.45 x 61.00 x 25.75mm

Product Highlights

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

Frequently Asked Questions

My XPS M1210 BIOS shows the new battery as "unknown" or won't display Wh correctly — is the cell faulty?

No — the BIOS is reading EEPROM data from the old cell, which no longer matches the new chemistry. The Wh figure stored in the EEPROM can differ from the actual rated capacity of the replacement cell. Run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. After that learn cycle completes, the BIOS updates its register read and reports the correct value.

The laptop cuts out suddenly under load — CPU-heavy tasks or running display at full brightness trigger it — but the gauge still shows charge left.

This is a voltage-sag shutdown. Under combined CPU and display load, current draw spikes and the cell voltage drops sharply. If the fuel gauge IC hasn't calibrated against the new cell yet, it doesn't anticipate that drop and the system hits the low-voltage cutoff without warning. Run two full discharge-to-hibernate cycles followed by uninterrupted charges to 100% to let the fuel gauge IC map the new cell's voltage curve. After calibration, the gauge tracks the actual cliff accurately and the premature shutdowns stop.

Charging stops at around 80% and won't go higher — is something wrong with the replacement cell?

Check whether Dell's battery health management is active in the BIOS. On the M1210, a BIOS-level charge limit can cap charging at 80% to reduce cell stress — this is a firmware setting, not a cell fault. Enter the BIOS setup utility, navigate to the Power Management section, and confirm the charge threshold is set to 100%. If no such setting appears, run a full discharge to hibernate then charge uninterrupted — an uncalibrated fuel gauge IC can also cause charge termination to trigger early on a new cell.

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

Dell XPS M1210 Replacement Battery, 11.1V, 6600mAh, 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