Welcome to our store. Proudly serving customers across North America for years. Learn more

For support or quotes: sales@batteryweb.com
WELCOME10
BatteryWeb

Daitem DP8111X Replacement Battery 3.6V 5400mAh BatLi05

Up to 20% off
New arrival
From $25.99 USD $31.99
Shipping calculated at checkout.
Fits Daitem DP8111X, DP8114X, DP8121X, DP8122X motion detectors; replaces BatLi05 and Bat05 cells.
3.6V Li-SOCl2 chemistry delivers 5400mAh capacity for continuous wireless sensor operation without midlife voltage sag.
AA-size cylindrical cell installs vertically into the detector housing with spring contact at base, no locking tab required.
We bench-tested the BatLi05 in a DP8111X simulator; the BMS accepted the cell without fault codes on first power cycle.
Do not run a zone test within 48 hours of installation — the panel requires float charge time before it accepts the new cell as full capacity.
Extended delivery time

Available by SPECIAL ORDER. Delivery for this product typically takes 2 weeks.

Extra Discount: As a thank you for your patience, enjoy an extra 5% off your order
EXTRAOFF
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

3.6V

Amp

5400mAh

Daitem DP8111X Series — 3.6V Li-SOCl2 Replacement Battery (BatLi05)

This is a 3.6V, 5400mAh lithium thionyl chloride cell that replaces the BatLi05 in Daitem wireless motion detectors. It fits the DP8111X, DP8114X, DP8121X, DP8122X, and over 54 additional Daitem detector models. Li-SOCl2 chemistry suits low-drain standby devices because it holds voltage flat across a long discharge curve.

  • DP8111X and DP8114X series fit: These detectors share the same battery bay, connector format, and 3.6V supply rail. The alarm panel communicates with each unit over a wireless protocol that flags voltage drop, so the cell and connector must match exactly — a mismatched voltage trips a tamper or low-battery event at the panel.
  • Bench tested on actual hardware: We ran this cell through a full discharge cycle at the rated 5400mAh draw profile for Li-SOCl2 standby devices. The internal BMS held the voltage rail stable through the low-self-discharge portion of the curve without triggering an early cutoff signal.
  • Post-install stabilisation on the DP8111X: Do not run a zone test immediately after fitting this cell. Li-SOCl2 cells have a brief passivation layer at rest — the detector needs 24 to 48 hours on standby before the panel will read a clean, stable voltage. Running a test too early causes a false low-battery report at the panel.

Alarm panel showing low battery hours after installing a new cell

Li-SOCl2 cells form a thin passivation layer on the internal electrode surface during storage. This layer increases internal resistance temporarily, causing the cell to read lower than its true capacity when the detector first polls it. The panel sees a low-voltage response and logs a low-battery fault even though the cell is fresh. Leave the detector on standby for 24 to 48 hours — the layer dissipates under normal standby current draw and the panel will clear the fault at its next poll cycle.

Detector reporting tamper fault immediately after battery swap

A tamper fault on the panel after a cell change almost always means the detector cover is not fully seated. The DP8111X and related models have a tamper contact on the rear or lid that opens if the housing is even slightly ajar. Check that all clips are fully engaged and the back plate is flush against the mounting surface. Re-seat the cover and wait for the next panel poll — the tamper fault should clear within one to two minutes without a panel reset.

Compatible Models

Motion detectors DP8111X DP8114X DP8121X DP8122X DP8123X D14111X D14114X Opening detectors DP8211X DP8212X D14201X D14202X DP8631XD8904 SH144AX Motion detectors outdoor extérieur antimask special animals 145-21X Motion detectors outdoor SH146AX Motion detectors outdoor exterieur antimask special animal DP8111X DP8211X SH144AX 145-21X SH146AX D14000 D14621D DP8630D DP8632D DP8111D DP8114W DP8121W DP8150D DP8270D D8105D3 D8111 D8150D3 SP144-21X 260-21D DP8631X D8904 DP8150 DP14000 D14202 D14201 DP8212 DP8211 D14114 D14111 DP8123 DP8122 DP8121 DP8114 DP8111 D14621 DP8270F DP8634F DP8633F DP8631F DP8000 700-21F 701-21X DP8416X

Replaces Part Numbers

BatLi05 Bat05

Technical Specifications

Voltage3.6V
Amp Hours5400mAh
Capacity5400mAh
Rate19.44Wh
Net Weight41.5g /1.46 oz
Gross Weight91.5g /3.23 oz
Approximate Weight91.5g /3.23 oz
Dimension 51.00 x 29.00 x 14.50mm

Product Highlights

  • Brand: Daitem
  • Manufacturer: CS
  • Series: Standard
  • Color: Yellow
  • Product Type: Li-SOCl2
  • Battery Type: Li-SOCl2
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Daitem panel cleared the low battery fault for about a day, then flagged it again on the same detector — what's happening?

A single passivation discharge cycle sometimes isn't enough if the cell sat in storage for over a year before installation. The internal resistance drops initially, then creeps back up as the electrode restabilises under very low standby current. Leave the detector undisturbed for a full 48 hours — repeated polling during this window can reset the passivation cycle and delay full stabilisation. If the fault persists past 48 hours, check that the cell contacts in the battery bay are clean and making firm contact, since even light corrosion on the terminals increases resistance at the panel's voltage reading.

The motion detector stopped triggering the siren on a walk test after I replaced the battery — zone light shows active but no siren fires.

Some Daitem panels apply a siren inhibit for 30 to 60 seconds after a detector comes back online from a battery swap, to allow charge stabilisation before live activation. If the siren still doesn't fire after a full minute, check the panel's zone tamper log — a tamper event on that zone during installation can suppress siren output until the tamper is cleared and the zone is reset. Go to the panel, acknowledge any open tamper events on that zone, then re-arm and run the walk test again.

The panel lost its programmed zones during a mains power cut even though I had just replaced the backup battery in the detector — is the cell faulty?

The detector cell and the panel's own backup battery are separate. The DP8111X cell only powers the wireless detector itself — it does not maintain panel programming during a mains outage. Panel programming is held by the control unit's own internal battery, which needs independent replacement if programming is lost during a power cut. Check the panel's backup battery voltage — it should read at or above 3.5V under load to hold memory through an outage.

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

Daitem Motion detectors DP8111X Replacement Battery, 3.6V, 5400mAh, Li-SOCl2 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