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Rectangular lithium-ion polymer battery pack with connector, light grey finish

STARNOVO

STARNOVO 3.7V 1000mAh Li-ion Battery for Garmin Nuvi 3400/3450/3490/3550/3750 Dash Cam 20

SKU CH-2DBQ-XVEWK

Replacement Li-ion polymer battery rated 3.7V 1000mAh for compatible Garmin navigators and Dash Cam 20

  • Product typeGPS Batteries
  • Replaces original Garmin battery across nine navigator models
  • 1000mAh capacity extends recording time on every charge
  • Li-ion polymer chemistry certified to UL, CE, UN38.3 and RoHS
  • Over 300 charge cycles maintain reliable daily operation
  • Compact 5.0 x 34.5 x 52.0 mm pack fits factory compartment

Purpose and fit

This STARNOVO lithium-ion polymer cell replaces the original battery in Garmin Nuvi 3400, 3450, 3490 and 3550 series navigators as well as the Dash Cam 20. It supplies 3.7 volts and 1000 milliampere-hours for users whose device no longer holds a charge.

Compatibility check

Verify that your unit appears in the supported list: Nuvi 3400, 3450, 3450LM, 3450M, 3490LMT, 3550LM, 3750 or Dash Cam 20. The pack measures 5.0 by 34.5 by 52.0 millimetres, so confirm the battery cavity matches these dimensions before ordering.

Build and daily use

The 20-gram cell is certified to UL, CE, UN38.3 and RoHS standards and rated for over 300 charge cycles. Its compact polymer construction fits the original compartment without modification, and the connector aligns with the factory header for a direct swap.

How it compares

Measured against everything we stock in GPS Mounts & Accessories, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 80% of the 716 comparable items (median $14.99).

Specifications

Product
Product typeGPS Batteries

Questions about this item

Does the battery come with tools or adhesive strips, or must I buy them separately?

The pack contains only the 3.7V 1000mAh Li-ion polymer cell measuring 5.0 x 34.5 x 52.0 mm and weighing 20 g. No screwdrivers, pry tools or adhesive strips are included.

My Garmin Nuvi 3490LMT is listed — is this the correct 1000 mAh version or is there a higher-capacity option?

The replacement is rated at 1000 mAh and 3.7 V, matching the original 361-00046-00 specification for every listed Nuvi and Dash Cam 20 model. No other capacity is offered for these devices.

What does the 1000 mAh rating actually deliver in a Nuvi 3550LM during daily driving?

At 3.7 V nominal the cell stores roughly 3.7 Wh, powering a Nuvi 3550LM for typical navigation sessions. Rated cycle life exceeds 300 full charges and operating temperature stays below 60 °C (140 °F).

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