Dentsing RJ40G 63Wh Replacement Laptop Battery

Dentsing RJ40G is a 63Wh (15.2V, 3941mAh) lithium‑ion replacement battery made to restore runtime for compatible Dell Latitude and Precision 15 notebooks.

If your Dell Latitude 14/15 or Precision 15 has a depleted internal battery, the Dentsing RJ40G offers a direct-replacement pack engineered to match the original specifications. This battery is designed for models that use part numbers like RJ40G, 01K2CF, 0WK3F1 and similar, and ships with an instruction leaflet so you can confirm fit and install it safely.

Will this battery fit my Dell laptop?

Check the part number and battery shape inside your existing laptop before purchasing — the RJ40G is compatible with many Latitude 14 5420, Latitude 15 5520 and Precision 15 3560 configurations as well as specific P137G/P104F variants. The product listing includes the common compatible P/Ns to make verification straightforward.

• Compatible with Dell Latitude 14 5420 and Latitude 15 5520 series
• Works with Dell Precision 15 3560 models
• Matches P137G, P137G001, P104F, P104F001 and related part numbers
• Confirm model and battery shape by opening the laptop back cover before buying

How much runtime or capacity can I expect?

The Dentsing RJ40G is rated at 63Wh (15.2V / 3941mAh), which aligns with many OEM replacements for these Dell notebooks. Actual run time depends on your laptop’s power profile, applications in use and device condition, but this capacity restores typical portable usage to levels similar to the original pack.

• Nominal capacity: 63Wh, rated 3941mAh at 15.2V
• Li‑ion chemistry for consistent discharge and recharge cycles
• Intended as a like‑for‑like replacement for original batteries

What’s included and what about warranty/support?

Your purchase includes one Dentsing RJ40G battery and an instruction sheet to guide installation. The seller provides a 30‑day refund window and a 12‑month warranty; for returns or direct support after retailer return windows close, contact the seller through the store contact link.

• Package contents: 1 battery, 1 instruction manual
• 30 days for refunds and 12 months limited warranty coverage
• Direct seller support available via store contact for post‑purchase assistance

Who is this for? The Dentsing RJ40G is aimed at Dell laptop owners who need an OEM‑spec replacement battery to restore mobile runtime — ideal for professionals, students and anyone who relies on Latitude or Precision 15 series notebooks and wants a straightforward, compatible battery swap. Before ordering, verify the battery model inside your laptop to ensure compatibility and avoid fitment issues.