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Rectangular black lithium-polymer laptop battery, 8.0 by 1.5 by 0.8 cm

Dr. Battery

Dr. Battery Dell Latitude 5570 / Precision 3510 7.4V 4000mAh laptop battery

SKU CH-QGSY-EN05S

A 7.4 V 4000 mAh lithium-polymer replacement battery built for Dell Latitude 5570, E5570 and Precision 3510 notebooks with integrated over-charge, over-discharge, overheat and short-circuit protection

  • Battery typeLi-polymer
  • Battery voltage rating7.4 V
  • Battery capacity4,000 mAh
  • Main functionNotebook
  • Measurements8.0 × 1.5 × 0.8
  • Product typeBattery
  • 4 V 4000 mAh Li-polymer cell delivers extended run-time
  • Replaces Dell OEM part numbers 21CP5, 2H2G4, 451-BBKH, HFRC3, TXJ69 for direct fit
  • Fits Latitude 5570, E5570 and Precision 3510 without modification
  • Built-in protection guards against over-charge, over-discharge, overheating and short-circuit
  • Compact 8.0×1.5×0.8 cm design weighs only 0.4 kg for easy carry

Professional replacement battery for Dell Latitude

This Dr. Battery Professional Series pack is built for Dell Latitude 5570, Latitude E5570 and Precision 3510 laptops. It uses Li-polymer cells rated at 7.4V and 4000 mAh to deliver reliable power for business and professional workloads. Integrated safety circuitry protects against over-charge, over-discharge, overheating and short-circuit.

Thermals and power behaviour in daily use

Li-polymer chemistry runs cool during typical office tasks and charges without generating excess heat. The built-in protection layer prevents thermal runaway and stops the pack from drawing current once full, keeping system fan noise low. Normal operation stays within the cell voltage window so power delivery remains steady throughout the discharge cycle.

Match your original part number

The battery replaces Dell original part numbers including 21CP5, 21CP63, 21CP105, 2H2G4, 451-BBKH, HFRC3 and TXJ69. Voltage must be 7.4V; the supplier also lists an 11.4V variant that will not work in these models. Confirm the exact part number printed on your old pack to ensure compatibility.

How it compares

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

Price $69.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameDELL
Model nameDell Latitude 5570 Series / Dell Precision 3510 Series
Part numberDR-PRO-LDE345-D
Product typeBattery
Power
Battery typeLi-polymer
Battery voltage rating7.4 V
Battery capacity4,000 mAh
Size & build
Measurements8.0 × 1.5 × 0.8
Compatibility
Compatible withDell Latitude 5570 / Dell Latitude E5570 / Dell Precision 3510
More details
Main functionNotebook

Questions about this item

How is the 7.4V 4000mAh battery installed in a Dell Latitude 5570, and what step do people often get wrong?

Power off the laptop, remove the base screws, disconnect the old battery cable before lifting it out, then connect the new battery cable firmly before reassembling; the step often missed is disconnecting the cable first.

What maintenance or replacement will the Li-polymer 4000mAh battery need later?

Li-polymer cells require no routine maintenance; plan to replace the battery once runtime drops noticeably or the pack no longer holds a full charge after repeated cycles.

What limit appears first on the 7.4V pack under sustained heavy workloads?

The integrated safety circuitry will trigger over-heating or over-current protection before the 4000mAh capacity is fully depleted during prolonged high-drain use.

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