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

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

Philips I999 Replacement Battery AB3000EWML 3.8V 2900mAh

Up to 21% off
New arrival
From $30.99 USD $38.99
Shipping calculated at checkout.
Fits Philips I999 and Xenium I999 smartphones; replaces OEM battery AB3000EWML.
3.8V, 2900mAh lithium-polymer cell restores full charge cycles on aged devices without capacity loss.
Connector slides into original battery slot with standard Philips contact orientation and retention tab.
Bench testing showed clean BMS handshake on first insertion; fuel gauge IC requires recalibration cycle.
On first use after installation, disable fast charging for one complete discharge-charge cycle to let the fuel gauge IC recalibrate against the new cell discharge curve.
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 12 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

2900mAh

Philips Xenium I999 — 3.8V Li-Polymer Replacement Battery (AB3000EWML)

This 3.8V, 2900mAh lithium-polymer battery replaces the original AB3000EWML cell in the Philips I999 and Xenium I999 smartphones. It fits directly into the existing battery bay and connects via the stock connector. Use the capacity figure from this listing — 2900mAh — not third-party sources.

  • I999 and Xenium I999 fitment: Both model variants use the same battery bay geometry, connector pinout, and BMS handshake protocol. One cell covers both.
  • Bench tested on actual hardware: We ran the AB3000EWML cell through charge and discharge cycles on the Xenium I999 platform. The BMS accepted the cell without error flags, and the charge IC completed a full cycle without thermal events.
  • Fuel gauge recalibration on first use: On first use after installation, disable fast charging and let the phone run through one complete discharge-charge cycle. This gives the fuel gauge IC time to map the new cell's discharge curve before fast charge current is applied to an uncalibrated cell.

Why the Xenium I999 reports wrong battery percentage after a cell swap

The fuel gauge IC on the I999 stores a learned discharge curve from the original cell. When a new cell goes in, that stored curve no longer matches actual cell behaviour — the IC reports percentage against the old data. This shows up as jumpy readings or a percentage that doesn't match real charge state. One full discharge down to automatic shutoff, followed by an uninterrupted charge to 100%, forces the IC to relearn the curve against the new cell. After that cycle, percentage readings stabilise.

Sudden shutdown at 20–30% on the replacement cell

This happens when the modem radio or screen backlight pulls a current spike the cell cannot sustain at that state of charge — voltage drops below the BMS cutoff threshold instantly, and the phone shuts off before the percentage gauge catches up. It is a voltage cliff, not a capacity fault. It is most common before the fuel gauge IC has completed its first recalibration cycle. Run one full discharge-charge cycle and check whether shutoffs persist below 3.6V under load.

Compatible Models

I999 Xenium I999

Replaces Part Numbers

AB3000EWML

Technical Specifications

Voltage3.8V
Amp Hours2900mAh
Capacity2900mAh
Rate11.02Wh
Gross Weight100g /3.53 oz
Approximate Weight100g /3.53 oz

Product Highlights

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

Frequently Asked Questions

My Philips I999 won't turn on at all after the replacement battery sat in a drawer for months — is the cell dead?

A lithium-polymer cell that drops below roughly 2.5V triggers a BMS lockout to prevent damage — the phone will not respond to the power button. Connect the phone to a wall charger, not a PC USB port, and leave it for 20–30 minutes without pressing anything. The charge IC needs time to trickle current into the cell before the BMS releases the lockout. If the charging indicator appears within that window, the cell is recovering — let it charge fully before booting.

Fast charging stopped working on my I999 right after I swapped in the new battery — worked fine before.

The proprietary charge protocol on the I999 involves a handshake between the charger, charge IC, and the new cell's BMS. On the first cycle, the BMS may not signal readiness for high-current charging until it has completed one standard charge cycle. Plug into the original Philips charger and complete one full charge at standard speed. On the second cycle, fast charge typically resumes — if it does not, check that the charger output voltage matches the 5V standard the phone expects.

The battery percentage on my I999 keeps jumping around — it shows 45%, then skips to 60%, then drops back down.

The fuel gauge IC is running against a discharge curve calibrated to the old, degraded cell — the new cell's voltage profile does not match that stored map, so percentage readings are erratic. This is a software calibration issue, not a cell fault. Drain the phone fully until it shuts itself off, then charge in one uninterrupted session to 100% without removing the charger. That single complete cycle rewrites the fuel gauge IC's reference curve to match the new cell.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • 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

Philips I999 Replacement Battery, 3.8V, 2900mAh, Li-Polymer 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