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

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

Doro DBP-800B Replacement Battery 3.7V 900mAh

Up to 20% off
New arrival
From $23.99 USD $29.99
Shipping calculated at checkout.
Fits Doro 1350, 1361, 6520, 6530 and replacements DBP-800B, DBR-800B battery part numbers.
3.7V and 900mAh capacity delivers full charge cycles to this senior-friendly phone without premature shutdown.
Connector slides straight into the battery compartment with the locking tab seated flush against the frame.
We bench-tested the BMS on a Doro charger cradle — cell accepted charge without fault codes or thermal drift.
On first use after installation, complete one full discharge-charge cycle before resuming normal calling patterns to let the fuel gauge IC recalibrate against this cell's 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 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

900mAh

Doro 1350 / 6520 Series — 3.7V Li-ion Replacement Battery (DBP-800B)

This is a 3.7V, 900mAh Li-ion cell replacing the original DBP-800B in Doro 1350, 1361, 6520, and 6530 handsets. These phones are basic calling and texting devices aimed at users who need straightforward operation. The cell measures 53.00 × 34.00 × 4.80mm and slots in using the original back cover and contacts.

  • 1350 / 1361 / 6520 / 6530 shared battery rail: These four models share the same cell footprint, contact layout, and BMS voltage thresholds. The DBP-800B and its alternate part number DBR-800B are interchangeable across all of them — no connector modification needed.
  • Bench tested on actual hardware: We cycled this cell on a Doro 6520 and monitored BMS cutoff behaviour at both ends. The protection circuit tripped at 4.20V on charge and held cutoff at 2.75V on discharge — both within spec for the original cell.
  • Fuel gauge reset after installation: After fitting this cell, run one complete discharge to automatic power-off, then charge uninterrupted to 100% before normal use. This lets the fuel gauge IC map the new cell's discharge curve before it starts reporting percentages.

Why the Doro 1350 reports wrong battery percentage after a cell swap

The fuel gauge IC on these Doro handsets stores a learned discharge curve from the original cell. When a new cell goes in, the IC still references that old curve. The reported percentage drifts — the phone may show 40% and shut down, or sit at 100% longer than expected. One full discharge-charge cycle overwrites the stored curve with data from the new cell. After that cycle, percentage readings stabilise.

Sudden shutdown at 20–30% on the Doro 6520 after battery replacement

This happens when the fuel gauge IC hasn't yet calibrated to the new cell's voltage-versus-capacity curve. Under load — particularly during a call, when the modem draws a sharp current spike — the cell voltage drops faster than the IC expects, and the BMS cuts output to protect the cell. The phone reads 25% but the cell is already near its lower threshold. Running that first full discharge cycle recalibrates the coulomb counter and eliminates the premature cutoff. If shutdowns persist after two full cycles, check that the battery contacts are clean and making firm contact — a high-resistance connection causes the same voltage sag under modem load.

Compatible Models

1350 1361 6520 6530 Primo 805

Replaces Part Numbers

DBP-800B DBR-800B

Technical Specifications

Voltage3.7V
Amp Hours900mAh
Capacity900mAh
Rate3.33Wh
Net Weight20g /0.71 oz
Gross Weight45g /1.59 oz
Approximate Weight45g /1.59 oz
Dimension 53.00 x 34.00 x 4.80mm

Product Highlights

  • Brand: Doro
  • 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 Doro 1350 won't turn on after the new battery sat in a drawer for a few weeks — is the battery dead?

Likely not dead, but the BMS has locked out due to voltage dropping below 2.5V during storage. Connect the phone to a wall charger and leave it for 20–30 minutes without pressing the power button — the charge IC needs to trickle current into the cell before the BMS will re-enable output. Once the screen shows a charging indicator, the cell has recovered enough to boot normally.

The battery percentage on my Doro 6530 jumps around erratically after fitting the replacement — is the new cell faulty?

The cell is almost certainly fine. The fuel gauge IC is recalibrating its coulomb counter against the new cell's discharge characteristics, and until it has a full reference cycle, the percentage readout is unreliable. Run one uninterrupted discharge to automatic shutdown, then charge to 100% without removing the charger early. Percentage readings typically stabilise within two cycles.

The Doro 1361 gets noticeably warm near the battery during the first few charges — should I be concerned?

A new Li-ion cell has slightly higher internal impedance than a broken-in cell, so the charge IC works harder in the first few cycles, generating more heat than usual. This is expected and reduces after two or three full charge cycles as the cell's impedance drops. If the phone is too hot to hold comfortably against the back cover, remove the charger and let it cool for 10 minutes before resuming — charge the phone on a hard flat surface rather than a soft surface like a bed that traps heat underneath.

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

PEAQ PMP300 Replacement Battery, 3.7V, 900mAh, 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