We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small rectangular lithium-polymer battery pack, grey plastic shell, two gold contacts, labeled 550mAh 3.7V

Estry

Estry 550mAh 3.7V Li-Polymer Battery for Nintendo DSi

SKU CH-NYXJ-MN3FX

Replacement Li-Polymer battery delivering 550 mAh at 3.7 V for Nintendo DSi, NDSiL and NDSi models with part numbers C/TWL-A-BP or TWL-003

  • TypeRechargeable Batteries
  • Battery Capacity550mAh
  • Battery Voltage3.7
  • Direct replacement for Nintendo DSi models
  • 550mAh 3.7V Li-Polymer cell matches original specs
  • Built-in overcharge and short-circuit protection
  • Certified to ISO9001, RoHS, CE and UN38.3
  • Compact 55.09 x 27.04 x 6.51mm form factor

Direct replacement for Nintendo DSi

This Estry lithium-polymer cell matches the original TWL-003 specifications at 3.7V and 550mAh. It fits the DSi, NDSi and NDSiL models without modification. Built-in protection guards against overcharge, over-discharge, over-voltage and short circuits. The pack is certified to ISO9001, RoHS, CE, UN38.3 and MSDS standards.

Single-cell Li-Polymer chemistry limits

The 550mAh capacity defines the practical runtime ceiling for the handheld. No higher-capacity alternative exists in the same 55.09 x 27.04 x 6.51mm footprint. The 3.7V nominal voltage is fixed by the chemistry and cannot be changed. Users needing longer sessions must carry a spare cell or external power bank.

Slim profile with original connector

At 6.51mm thick and 38.0g the battery slides into the DSi bay flush with the shell. The factory-style connector plugs straight onto the mainboard; no soldering or adapter cables are required. RoHS compliance confirms the absence of restricted substances. CE and UN38.3 markings allow international transport without special handling.

Highlights

  • Direct replacement for Nintendo DSi models
  • 550mAh 3.7V Li-Polymer cell matches original specs
  • Built-in overcharge and short-circuit protection
  • Certified to ISO9001, RoHS, CE and UN38.3
  • Compact 55.09 x 27.04 x 6.51mm form factor

Specifications

BrandNintendo
TypeRechargeable Batteries
Battery Capacity550mAh
Battery Voltage3.7

Questions about this item

Should I choose the 550mAh 3.7V version or a different capacity?

The 550mAh 3.7V lithium-polymer cell matches the original Nintendo DSi specifications, so it fits the DSi, NDSiL and NDSi models without modification.

How long will the 550mAh rating actually last during gameplay?

The 550mAh capacity restores the same run-time the console had when it was new; actual hours depend on screen brightness, volume and wireless use.

Does the battery use a standard connector or a proprietary interface?

It connects through the original DSi battery contacts, so no adapter or soldering is required for installation.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.