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Rectangular lithium-polymer battery pack, dark casing, connector on one side

Cameron Sino 1800mAh 3.7V Battery for Garmin ZUMO 340LM 350LM 390LM

SKU CH-MWAM-6N5WA

Replacement lithium-polymer cell delivering 1800 mAh at 3.7 V for Garmin ZUMO 340LM, 350LM and 390LM navigators

  • Battery pack size50.1 × 34 × 9.9
  • Battery typeLithium polymer
  • Battery capacity1,800 mAh
  • Battery voltage rating3.7 V
  • Details50.1 × 34 × 9.9
  • Product typeLithium polymer
  • 1800 mAh capacity keeps your navigator running longer
  • 7 V lithium-polymer cell matches original voltage exactly
  • 10 × 34.00 × 9.90 mm form factor fits ZUMO 340LM, 350LM and 390LM
  • ISO 9001, RoHS and CE certified for safety compliance
  • Fully decoded chip works like the original battery

Replacement Battery for Garmin ZUMO GPS

This Cameron Sino lithium polymer battery replaces the original Garmin 361-00059-00 pack in ZUMO 340LM, 350LM and 390LM navigators. It delivers 1800mAh at 3.70V for 6.66Wh of energy. The pack measures 50.10 x 34.00 x 9.90mm and weighs 32.0g. A fully decoded chip ensures the GPS recognises the cell exactly as the factory unit.

Sustained Load Behaviour

The 1800mAh capacity supports extended navigation sessions without the voltage sag seen in aged cells. Internal protection guards against over-charge, over-discharge, over-voltage and short-circuit during long rides. After two or three full charge cycles the pack reaches its rated runtime. ISO9001, RoHS and CE certification confirm consistent manufacturing quality.

Interface and Fit Limits

The battery connects only through the original Garmin ZUMO connector; no other interface is present. Physical dimensions of 50.10 x 34.00 x 9.90mm restrict use to the listed ZUMO models. Installers must verify the part number 361-00059-00 or 361-00059-01 on the old cell before fitting. Storage above 60°C / 140°F is not permitted.

How it compares

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

Price $11.99
Pricier than about 55% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameCameron Sino
Model nameZUMO 340LM, ZUMO 350LM, ZUMO 390LM, zumo 396, zumo 396 LMT-S
Part number361-00059-00, 361-00059-01
Product typeLithium polymer
Power
Battery typeLithium polymer
Battery capacity1,800 mAh
Battery voltage rating3.7 V
In the box
Battery pack size50.1 × 34 × 9.9

Questions about this item

Does the 1800mAh 3.7V lithium-polymer cell generate noticeable heat during a full day of GPS navigation?

The battery runs at 3.7 volts with a 1800mAh capacity and weighs 32.0g; normal operation in a Garmin ZUMO produces only slight warmth, not excessive heat.

What must I already own to install this replacement battery in my ZUMO 350LM?

You need a compatible Garmin ZUMO 340LM, 350LM, 390LM or zumo 396 device and a small screwdriver to open the battery compartment and connect the existing connector.

Will the 50.10 x 34.00 x 9.90 mm pack fit the original battery bay on my older ZUMO 340LM without modification?

Yes, the dimensions match the original Garmin 361-00059-00 part exactly, so the pack seats in the same bay and the connector aligns with the motherboard header.

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