We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular lithium battery pack 73.0 by 53.7 by 4.78 mm, dark casing, two wire leads

Estry

Estry Z837VL 2800mAh 3.85V standard battery

SKU CH-DQAZ-6101F MPN Z837VL

Replacement lithium battery delivering 2800 mAh at 3.85 V for Z837VL, ZFIVE 2, Avid Trio, Z833, Q802T and Z836BL models

  • TypeBatteries
  • Battery Pack1-pack
  • Battery TypeLithium
  • Battery Capacity2800mAh
  • Battery Voltage3.85
  • 2800 mAh capacity keeps your device running longer
  • 85 V lithium cell matches original specifications exactly
  • Built-in overcharge, over-discharge, over-voltage and short-circuit protection
  • Fits Z837VL, ZFIVE 2, Avid Trio, Z833, Q802T, Z836BL models
  • Certified to ISO 9001, RoHS, CE, UN38.3 and MSDS standards

Compatible Replacement Battery

The Estry Z837VL is a 2800mAh lithium-ion cell built to match the original specifications for select mobile devices. It delivers 3.85V and 10.78Wh of energy in a single pack. The unit carries ISO9001, RoHS, CE, UN38.3 and MSDS certifications. Protective circuitry guards against overcharge, over-discharge, over-voltage and short circuits.

Fits Listed ZTE and Avid Models

This battery suits owners of the Z837VL, ZFIVE 2, Avid Trio, Z833, Q802T or Z836BL who need a direct replacement. Buyers with other handsets or different part numbers should look elsewhere. The pack measures 73.0 by 53.7 by 4.78mm and weighs 74.0g. Verify the model and part number before ordering.

Capacity Decides Runtime

The 2800mAh rating is the single figure that determines whether this cell meets your daily usage needs. A lower capacity would shorten screen-on time while a higher one would require a different physical size. Confirm that 2800mAh matches the original battery label. This specification decides if the part is correct for your device.

Highlights

  • 2800 mAh capacity keeps your device running longer
  • 85 V lithium cell matches original specifications exactly
  • Built-in overcharge, over-discharge, over-voltage and short-circuit protection
  • Fits Z837VL, ZFIVE 2, Avid Trio, Z833, Q802T, Z836BL models
  • Certified to ISO 9001, RoHS, CE, UN38.3 and MSDS standards

Specifications

TypeBatteries
Battery Pack1-pack
Battery TypeLithium
Battery Capacity2800mAh
Battery Voltage3.85

Questions about this item

How do I install the Estry Z837VL battery in my Z837VL phone and what step is often missed?

Power off the device, remove the back cover, disconnect the old battery connector, connect the new Li3928T44P4h735350 battery, and ensure the connector clicks fully into place before reassembling.

What maintenance or replacement will the Estry Z837VL 2800mAh lithium battery need over time?

The lithium cell will gradually lose capacity after hundreds of charge cycles; when runtime drops below your needs, replace it with another 3.85V 2800mAh pack.

What limit appears first during sustained heavy use of the Estry Z837VL 10.78Wh battery?

The 2800mAh capacity determines runtime; under continuous high drain the voltage will sag toward the 3.85V nominal level and the phone will shut down to protect the cell.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.