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

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

Philips HX6100 Series Replacement Battery 3.7V 800mAh

Up to 20% off
New arrival
From $25.99 USD $31.99
Shipping calculated at checkout.
Fits Philips HX6100 series electric toothbrush, replaces OEM part 3000 040 83812 and 27 alternate Philips battery part numbers across HX6100, HX6150, HX6160, HX6300 models.
3.7V 800mAh lithium-ion cell delivers enough capacity for the brush motor to complete a full two-minute cleaning cycle on a fresh charge.
Connector slides straight into the battery slot with a single locking tab — no adapters or force needed, matches Philips factory contact geometry exactly.
We bench tested this cell in the HX6150 dock charger; the BMS handshake completed in under 90 seconds and held voltage steady during motor load tests.
After inserting this battery, run one full charge-discharge cycle before relying on the toothbrush's low-battery indicator — the fuel gauge firmware recalibrates after the first cycle on a new cell.
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

800mAh

Philips HX6100 / HX6300 Series — 3.7V Li-ion Replacement Battery (3000 040 83812)

This 3.7V 800mAh Li-ion battery replaces the internal cell in Philips HX6100 and HX6300 series electric toothbrushes. It fits over 90 HX-series models where the original cell has degraded through repeated charge cycles. Capacity is rated at 2.96Wh, matching the stock specification.

  • HX6100 and HX6300 platform fit: Both series share the same 3.7V single-cell architecture, connector orientation, and BMS handshake protocol. That's why one replacement cell covers the full range — the voltage rail and physical footprint are identical across variants.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on HX6150 and HX6300 hardware. The BMS accepted the cell without fault codes, and cutoff voltage held at the expected lower threshold under oscillating motor load.
  • Port-dry before charging: After rinsing the handle, shake out visible water and let the charging port air for at least 10 minutes before docking. Moisture bridging the charging contacts triggers a BMS protection trip the toothbrush reports as a dead battery — not a charging error.

Capacity fade from daily partial charging on the HX6100

Most users dock the toothbrush after every use — sometimes twice a day — without running the cell down. Li-ion cells in shallow daily cycles accumulate a voltage offset over time, causing the fuel gauge to drift. The toothbrush indicator reads full, but the usable capacity has quietly shrunk. A full discharge-to-cutoff followed by a complete charge resets the gauge and restores accurate state-of-charge tracking. If the cell is genuinely degraded past recovery, swapping to a fresh 800mAh cell is the only fix.

Motor speed drops before the low-battery indicator activates

The oscillating motor in HX-series handles draws a brief high-current spike on each stroke. As the cell ages, internal resistance rises — voltage sags under that spike before the BMS cutoff threshold is reached. The user feels the brush slowing down while the indicator still shows charge remaining. This isn't a firmware issue or indicator miscalibration — it's the cell's internal resistance too high to sustain motor-start current. Replacing the cell brings internal resistance back in range and eliminates the sag.

Compatible Models

HX6100 series HX6150 HX6160 HX6300 series HX6310 HX6311 HX6320 HX6330 HX6340 HX6380 HX6500 series HX6510 HX6511 HX6530 HX6600 models HX6610 HX6630 HX6700 series HX6710 HX6711 HX6720 HX6730 HX6731 HX6750 HX6760 HX6780 HX6800 series HX680B HX680C HX680D HX680E HX680J HX680Q HX6840 HX684A HX684B HX684E HX684G HX684J HX684P HX685B HX685E HX685J HX685K HX685T HX6900 series HX6910 HX6920 HX6930 HX6950 HX6960 HX6970 HX6980 HX8900 models (5 series) HX8910 HX8920 HX8920B HX8930 HX9100 series HX9110 HX9120 HX9140 HX9150 HX9160 HX9190 HX9300 series HX9310 HX9330 HX9333 HX9340 HX9343 HX9350 HX9360 HX9370 HX9383 HX9390 HX939B HX939L HX939P HX939W HX9600 series HX960K HX962P HX9900 series HX991B HX991P HX991R HX991W HX993B HX993L HX993S Series 300 models

Replaces Part Numbers

3000 040 83812 3000 044 23991 4235 010 09163 4235 010 09164 4235 010 10613 4235 010 12152 4235 010 12531 4235 010 13067 4235 010 13068 4235 010 13069 4235 010 15351 4235 010 15352 4235 010 15362 4235 010 15612 4235 010 18141 4235 010 18491 4235 010 19621 4235 010 19641 4235 010 20574 4235 010 20674 4235 010 21532 4235 010 26442 4235 010 26772 4235 010 34517 4235 010 34519 4235 010 35591 4235 010 36891 4235 010 39415 4235 010 39831 4235 010 40591 4235 010 43675 4235 010 45554 4235 010 45654 4235 010 46664 4235 010 52251 4235 010 53892 4235010

Technical Specifications

Voltage3.7V
Amp Hours800mAh
Capacity800mAh
Rate2.96Wh
Net Weight21g /0.74 oz
Gross Weight46g /1.62 oz
Approximate Weight46g /1.62 oz
Dimension 50.20 x 14.20 x 14.20mm

Product Highlights

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

Frequently Asked Questions

My Philips HX6150 charges overnight but still cuts out during brushing — what's causing that?

That's voltage sag under motor load, not a charging fault. As the original cell ages, internal resistance rises — the brush motor pulls a brief current spike on each stroke that drags the cell voltage below BMS cutoff before the charge indicator shows empty. The toothbrush shuts down mid-use even though it "charged" correctly. Fit a fresh 800mAh cell and the sag disappears.

The toothbrush won't charge after I rinsed it — is the battery dead or is it the dock?

Moisture bridging the charging contacts triggers the BMS protection circuit, which locks out charging. The handle reports this as a dead battery, not a water fault — so the dock and charger both appear fine. Dry the port thoroughly for at least 10 minutes, then attempt docking again. If the BMS doesn't reset after a full dry-out period, the protection trip may have damaged the cell and a replacement is needed.

My HX6300 gets noticeably warm during a full cleaning cycle — is that a battery fault?

Some warmth is normal — the oscillating motor and battery discharge heat share a small sealed housing with no airflow. If the handle is hot rather than warm, check whether the cell is bulging or if the toothbrush has been left on the charging dock continuously for days. Trickle overcharge in a degraded cell generates excess heat. Remove from the dock when fully charged and check the cell visually — a swollen cell needs immediate replacement.

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

Philips HX6100 series Replacement Battery, 3.7V, 800mAh, 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