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Rectangular black laptop battery with three cells and Dell branding

Total Micro Technologies

Total Micro Technologies 3-Cell 42Whr Laptop Battery for Dell

SKU CH-EYZ9-7GD87

A 3-cell, 42 Whr replacement laptop battery compatible with Dell models

  • 3-cell design delivers portable power for Dell laptops
  • 42 Whr capacity supports extended mobile use
  • Total Micro Technologies engineering ensures reliable cell performance
  • New condition guarantees full rated capacity from first charge
  • Listed by manufacturer on 28 March 2026 for current compatibility

3-Cell 42Whr Dell Laptop Battery

This replacement battery is built for Dell notebooks that require a 3-cell 42Whr power pack. It suits owners whose original pack no longer holds a useful charge and who want a direct swap without adapter changes.

Normal-use thermals and power draw

The cell chemistry runs at typical laptop temperatures during everyday workloads and charges within the standard voltage range Dell firmware expects. No extra cooling or power-brick upgrade is required for regular office or web browsing sessions.

Bundled items and software impact

The package contains only the battery itself; there are no cables, tools, or management utilities included. Installation is a mechanical swap, so the buyer’s existing Dell power-management software continues to handle charge reporting and health monitoring unchanged.

How it compares

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

Price $60.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameTotal Micro

Questions about this item

How do I install the 3-cell 42Whr battery in my Dell laptop?

Power off the laptop, unplug the AC adapter, release the battery latch, remove the old pack, align the new battery with the guides, press until it clicks, then reconnect power.

What maintenance will this 42Whr battery need over time?

Store at roughly half charge if unused for weeks, keep the contacts clean, and run a full charge cycle every few months to maintain calibration.

What limit appears first during sustained use of this 3-cell pack?

The 42Whr capacity sets the runtime ceiling, so the battery will reach empty before thermal or voltage limits become a factor.

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