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Thin rectangular black lithium-polymer battery 59 by 36.5 by 5.5 millimetres

CameronSino

CameronSino DS-CS-IQN780SL 1250mAh GPS battery for Nuvi 780 785

SKU CH-MXVF-2R5RX

Replacement 3.7V 1250mAh Li-Polymer battery fits Garmin Nuvi 780, 780T, 785 and 785T GPS units

  • Product typeGPS Batteries
  • Product dimensions59 × 36.5 × 5.5 mm
  • Product weight60
  • 1250mAh capacity supports longer navigation sessions
  • 7V Li-Polymer chemistry matches original Garmin specification
  • 00 x 36.50 x 5.50mm form factor fits Nuvi 780, 780T, 785, 785T
  • Replaces OEM part EC36EC4240878 for direct compatibility
  • 60g lightweight cell keeps device portable

Compatible Garmin Nuvi models

This replacement battery fits Garmin Nuvi 780, 780T, 785 and 785T satellite navigation units. It matches the original EC36EC4240878 part number and restores power to devices that no longer hold a charge. The 1250mAh lithium-polymer cell delivers the same 3.7V output as the factory pack.

Verify your device before ordering

Confirm that your Nuvi unit is one of the four listed models; other Garmin series use different battery sizes and connectors. Check that the existing pack measures 59.00 x 36.50 x 5.50mm so the replacement sits flush in the compartment. The battery is brand new and sold as a single unit.

Slim Li-Polymer construction

The black polymer cell weighs 60 grams and slides into the Nuvi battery bay without tools or soldering. Its thin 5.50mm profile keeps the navigator’s original thickness and balance. OEM-compatible contacts align with the device connector for a secure, reliable fit.

How it compares

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

Price $12.99
Cheaper than about 60% of the 716 comparable items (median $14.99).

Specifications

Product
Brand nameCameron Sino
Model nameDS-CS-IQN780SL
Product typeGPS Batteries
Size & build
Product dimensions59 × 36.5 × 5.5 mm

Questions about this item

Does the box include any tools or adhesive strips, or must they be purchased separately?

The package contains one 3.7V 1250mAh Li-Polymer battery measuring 59.00 x 36.50 x 5.50mm and weighing 60g; no tools or adhesive strips are included.

My Nuvi 780T shows part number EC36EC4240878 — is this the exact match?

Yes, the DS-CS-IQN780SL replaces EC36EC4240878 and fits Nuvi 780, 780T, 785 and 785T.

What runtime can I expect from the 1250mAh cell in a Nuvi 785?

The 1250mAh capacity restores the original 3.7V specification; actual run time depends on screen brightness and GPS usage patterns.

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