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Rectangular Ni-MH battery pack, green label, 50.43 by 42.54 by 14.4 mm

Estry

Estry 39230 3.6V 1200mAh standard battery

SKU CH-WSWT-5NXTY MPN 39230

Ni-MH 3.6V 1200mAh replacement battery for SYLVANIA 39230 and 39370 models

  • Battery pack size1 Year
  • Details3.6
  • Exact-fit replacement for SYLVANIA 39230 and 39370 models
  • 6V 1200mAh Ni-MH chemistry delivers 4.32Wh of reliable power
  • Compact 50.43 x 42.54 x 14.4mm size fits original battery compartment
  • Built-in protection guards against overcharge, over-discharge, over-voltage and short circuit
  • Certified to ISO9001, RoHS, CE, UN38.3 and MSDS standards

Replacement Ni-MH battery

The Estry 39230 is a 3.6V 1200mAh nickel-metal-hydride pack built to match the original specifications for Sylvanias 39230 and 39370 models. It delivers 4.32Wh of energy and includes overcharge, over-discharge, over-voltage and short-circuit protection for safe, durable operation. The cell measures 50.43 x 42.54 x 14.4mm and weighs 90.3g.

Suitable users and limits

This pack suits owners of devices that specify the 39230 or 39370 part numbers and require a 3.6V Ni-MH source with the listed dimensions. Buyers whose equipment demands a different voltage, chemistry, capacity or physical size should look elsewhere, as will anyone needing a rechargeable format not covered by the stated compatibility list.

Deciding specification

The critical figure is the 3.6V 1200mAh Ni-MH rating in the 50.43 x 42.54 x 14.4mm form factor; only devices designed for that exact voltage, capacity and footprint will work correctly.

How it compares

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

Price $12.99
Pricier than about 60% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameNi-MH
Model name1,200 mAh
In the box
Battery pack size1 Year

Questions about this item

How do I install this 3.6V 1200mAh battery and what step do people often miss?

Insert the pack matching the 50.43 x 42.54 x 14.4mm dimensions and 90.3g weight into the SYLVANIA 39230 or 39370 compartment, ensuring the connector polarity aligns; the step often missed is confirming the exact model number before fitting.

What maintenance or replacement will this Ni-MH 3.6V 1200mAh pack need later?

Expect gradual capacity loss after several hundred charge cycles; the built-in overcharge, over-discharge, over-voltage and short-circuit protection extends life, but plan to replace the 4.32Wh pack when run-time drops below usable levels.

What limit appears first under sustained use of this 3.6V 1200mAh battery?

The 1200mAh capacity and 4.32Wh energy rating set the runtime ceiling; protection circuits will cut output if voltage sags too far or temperature rises, so continuous high-drain loads hit the capacity limit first.

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