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MOBI DXR 70216 Compatible Battery 3.7V 1700mAh Li-ion

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Sale priceFrom $22.99 USD Regular price $28.99
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Fits MOBI DXR and DXR Touch parent units; replaces OEM part number 70216.
3.7V 1700mAh lithium-ion cell powers the parent unit for continuous wireless monitoring and two-way audio with the camera unit.
Connector slides into the battery compartment with a single retention tab; orientation marked inside the unit.
We bench-tested this cell on the DXR platform — BMS accepted the pack on first insertion with no fault codes; voltage held steady under sustained audio streaming.
After battery installation, re-pair the parent unit with the camera unit using the sync button — power loss breaks the wireless link and requires manual reconnection.
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
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Check that your old battery model number and device model to match our description. This makes sure they work together.


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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.

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⚠️ 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

1700mAh

MOBI DXR / DXR Touch — 3.7V Li-ion Replacement Battery (70216)

This is a 3.7V 1700mAh Li-ion replacement for the MOBI DXR and DXR Touch baby monitor parent unit. OEM part number 70216. It restores power to the parent unit when the original cell no longer holds charge.

  • DXR and DXR Touch parent units: Both models use the same 3.7V single-cell Li-ion pack with the same physical footprint and connector orientation. The BMS in each parent unit reads cell voltage directly — the 70216 pack reports state-of-charge the same way the original does.
  • Bench tested on actual hardware: We ran charge and discharge cycles on this cell and confirmed the BMS accepts the pack without fault codes. The protection circuit trips correctly at low-voltage cutoff and allows full recharge from flat.
  • Re-pair after a dead-flat swap: If the parent unit's battery drained completely before replacement, the DXR loses its wireless link to the camera unit. After fitting this battery, power the parent unit on and manually re-pair it with the camera — the pairing is not stored independently of the battery state on these units.

Parent unit not connecting to camera unit after battery swap

When the DXR parent unit loses power completely — either from a flat battery or a battery swap — it drops the wireless pairing with the camera unit. The radio module resets to an unpaired state on first boot. This is not a fault with the replacement battery. Power on the parent unit, navigate to the pairing menu, and follow the on-screen steps to re-link the camera unit.

Parent unit battery draining overnight with screen on

Running the DXR parent unit overnight with the screen active is a sustained high draw on a 1700mAh cell. The display and IR receiver together pull significantly more current than audio-only mode. Enable the screen timeout setting in the parent unit menu so the display goes dark between alerts. This keeps the cell well above the low-voltage cutoff through a full night.

Compatible Models

DXR DXR Touch

Replaces Part Numbers

70216

Technical Specifications

Voltage3.7V
Amp Hours1700mAh
Capacity1700mAh
Rate6.29Wh
Net Weight30.8g /1.09 oz
Gross Weight55.8g /1.97 oz
Approximate Weight55.8g /1.97 oz
Dimension 66.20 x 44.00 x 5.10mm

Product Highlights

  • Brand: MOBI
  • 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 MOBI DXR parent unit shows full charge on the new battery but the night vision feed is black — what's wrong?

The IR LEDs in the camera unit need the camera's own power supply, but the parent unit's display of the night vision image depends on receiving a clean signal — and radio reception on the DXR is voltage-sensitive. If the new battery hasn't had a full first charge, the parent unit's radio may not be running at full power. Charge the parent unit fully before testing night vision — the radio draws more current during video streaming than during audio-only mode, and a partially charged cell sags under that load.

The range on my DXR parent unit dropped noticeably after fitting the replacement battery — it loses signal in the next room now.

The 2.4GHz radio transmitter in the DXR parent unit pulls more current during active transmission than when idle, and output power tracks cell voltage directly. A cell that hasn't completed its first full charge will sag under radio load and the transmitter backs off. Charge the parent unit for a full cycle, then test range again. If range is still short after a full charge, check that the camera unit antenna is unobstructed and positioned upright.

The MOBI DXR parent unit screen switches on but the battery indicator drops to empty within a few minutes on the new cell — is the battery faulty?

This is almost always the battery protection circuit recovering from a deep discharge, not a faulty cell. If the original battery was left flat for an extended period, the BMS on the parent unit may initialise slowly and misread the state-of-charge on first boot. Leave the parent unit on charge — connected to the charger and powered on — for a full uninterrupted charge cycle. The BMS recalibrates its state-of-charge estimate once the cell reaches 4.2V and the indicator will read correctly after that.

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