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Rectangular lithium battery pack with black finish and connector wires

Estry

Estry PT18650-SP PCM5200 5200mAh 3.7V camera battery

SKU CH-0274-MGJNK

Replacement lithium cell for Spaceview Pro baby cam T8321-M delivering 5200 mAh at 3.7 V with overcharge and short-circuit protection

  • Battery typeLithium
  • Battery capacity5,000 mAh
  • Battery voltage rating3.7
  • Product typeRechargeable Batteries
  • Exact-match replacement for Spaceview Pro T8321-M
  • 5200 mAh capacity powers longer monitoring sessions
  • Built-in protection prevents overcharge and short circuits
  • Certified to ISO 9001, RoHS, CE and UN 38.3
  • Compact 66.0 × 37.0 × 21.0 mm design fits the original slot

Replacement for Spaceview Pro T8321-M

This 3.7V lithium battery replaces the original PT18650-SP PCM5200 pack in the Spaceview Pro baby cam T8321-M. It delivers a rated 5200mAh capacity and 19.24Wh energy for extended monitoring time. The cell measures 66.0 x 37.0 x 21.0mm and weighs 121.0g. It is built to match the factory specifications exactly.

Upgrade from depleted original cells

The unit replaces a worn-out factory battery that no longer holds a full charge. The jump is worth it when the monitor runtime has dropped noticeably or the camera shuts down unexpectedly. Integrated overcharge, over-discharge, over-voltage and short-circuit protection helps preserve the new cell’s lifespan. Buyers who need a different form factor or a higher voltage platform cannot use this pack.

Direct drop-in installation

Installation consists of opening the camera’s battery compartment, removing the old pack and inserting this one in the same orientation. No soldering or tools are required beyond a small screwdriver for the cover. The most common issue is ordering the wrong part number; confirm the PT18650-SP PCM5200 code on the original label before purchasing.

How it compares

Measured against everything we stock in Camera Batteries, Grips & Chargers, at today’s prices. Recalculated every night.

Price $16.99
Typical for this category: the median of 5,900 items is $17.99.

Specifications

Product
Product typeRechargeable Batteries
Power
Battery typeLithium
Battery capacity5,000 mAh
Battery voltage rating3.7

Questions about this item

Will the 66.0 x 37.0 x 21.0 mm case fit the Spaceview Pro baby cam T8321-M battery compartment?

Yes — the pack is built to the exact dimensions of the original PT18650-SP PCM5200 cell so it seats in the T8321-M compartment without modification.

What is the correct orientation when inserting the 3.7 V 5200 mAh pack into the T8321-M, and what step do users often miss?

Align the polarity markers on the pack with the camera contacts, press firmly until the latch clicks, then run a full charge cycle before first use — skipping that initial calibration is the common mistake.

What replacement interval should I expect for a 19.24 Wh lithium pack used daily in a baby monitor?

With the built-in overcharge, over-discharge and short-circuit protection, the cell typically delivers several years of daily cycles; replace when run-time falls below half of the original 5200 mAh rating.

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