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
Cylindrical nickel-metal hydride battery pack, matte finish, 213.4 by 23.2 millimetres

Estry

Estry SL20X-LED standard battery 6.0V 1800mAh

SKU CH-ESS5-Z8VS1 MPN SL20X-LED

Ni-MH replacement battery for SL20X-LED Ultrastinger flashlights, 6.0V 1800mAh with overcharge and short-circuit protection

  • Specifications6
  • Battery Pack1 Year
  • Exact-fit replacement for SL20X-LED Ultrastinger lights
  • 0 V Ni-MH chemistry delivers 1800 mAh capacity
  • Built-in protection against overcharge, over-discharge, over-voltage and short circuits
  • Certified to ISO 9001, RoHS, CE and UN 38.3 safety standards
  • Compact 213.4 × 23.2 × 23.2 mm pack weighs 372.0 g

Ni-MH replacement battery

The Estry SL20X-LED is a nickel-metal hydride battery built to match the original specifications for the Ultrastinger flashlight. It delivers 6.0 V and 1800 mAh for 10.8 Wh of energy. The pack measures 213.4 x 23.2 x 23.2 mm and weighs 372.0 g. Safety circuits guard against overcharge, over-discharge, over-voltage and short circuits.

Suits Ultrastinger owners; not for other lights

This cell fits the SL20X-LED Ultrastinger and replaces part numbers 20175, 77175, 5.486.432 and 9926J. It is not for users who need a different voltage, a different chemistry or a pack that fits another flashlight model. Buyers should verify their device model and part number before ordering.

6.0 V 1800 mAh Ni-MH chemistry

The decisive specification is the 6.0 V, 1800 mAh nickel-metal hydride chemistry in the stated form factor. Only devices designed for that exact voltage, capacity and physical size will operate correctly and safely.

Highlights

  • Exact-fit replacement for SL20X-LED Ultrastinger lights
  • 0 V Ni-MH chemistry delivers 1800 mAh capacity
  • Built-in protection against overcharge, over-discharge, over-voltage and short circuits
  • Certified to ISO 9001, RoHS, CE and UN 38.3 safety standards
  • Compact 213.4 × 23.2 × 23.2 mm pack weighs 372.0 g

Specifications

BrandNi-MH
Model1800mAh
Specifications6
Battery Pack1 Year

Questions about this item

How do I install the SL20X-LED battery pack into the Ultrastinger flashlight?

Align the pack's contacts with the flashlight's internal terminals, then slide the 213.4 mm long unit fully into the battery tube until it seats firmly; the step users miss is ensuring the orientation matches the original 20175 or 77175 part so the protection circuit engages correctly.

What maintenance or replacement will this 6.0V 1800mAh Ni-MH pack need over time?

Expect to recharge after each use; the pack carries a one-year manufacturer warranty and should be replaced when runtime drops noticeably below the rated 10.8 Wh capacity, typically after several hundred charge cycles.

What limit appears first during sustained high-output use of the Ultrastinger with this battery?

The 1800 mAh capacity delivers 10.8 Wh total energy, so extended high-lumen operation will hit the energy limit before thermal protection activates, giving a finite runtime per charge.

Also in this aisle

People compared these

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