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Thin black lithium-polymer battery with gold contacts

Cameron & Co

Cameron & Co DS-CS-AST290SL 3.8V 1100mAh Li-Polymer e-book accessory

SKU CH-59DW-NJKN2

Replacement lithium-polymer battery for Kindle Oasis 3, 3.8 V 1100 mAh capacity

  • Product typeEbook Battery
  • Replaces Kindle Oasis 3 battery with 100 % OEM-compatible fit
  • Delivers 1.1 Ah capacity at 3.8 V for reliable reading time
  • Li-Polymer chemistry keeps weight low in a slim 3.60 mm profile
  • Matches original part numbers ST29 and 58-000252 for direct installation
  • Compact 67.54 x 32.80 mm footprint slots into the existing compartment

Replacement Battery for Kindle Oasis 3

This lithium-polymer cell is built as a direct replacement for the Amazon Kindle Oasis 3. It matches the original ST29 and 58-000252 part numbers and supplies 3.8 V at 1100 mAh. Readers who need a fresh power source for that specific e-reader model will find a compatible fit.

Slim Li-Polymer Build and Simple Swap

The pack measures 67.54 x 32.80 x 3.60 mm and uses a flat lithium-polymer construction in black. Its thin profile allows it to sit inside the Oasis 3 chassis without forcing the case or adding bulk. Installation follows the standard battery connector layout, so no soldering or adapter cables are required.

Restores Original Runtime for Aging Units

The cell delivers 4.18 Wh, matching the factory capacity of the original battery. It replaces a depleted pack that no longer holds a charge through a full reading session. The upgrade is worthwhile when the device shuts down early or requires constant tethering to a charger.

How it compares

Measured against everything we stock in E-Reader & Tablet Cases, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 70% of the 248 comparable items (median $25.99).

Specifications

Product
Brand nameCameron Sino
Model nameDS-CS-AST290SL
Product typeEbook Battery

Questions about this item

What is the voltage and capacity of the DS-CS-AST290SL battery?

The DS-CS-AST290SL is a 3.8V lithium-polymer cell rated at 1100mAh, which equals 4.18Wh of energy storage.

Will this battery fit inside a Kindle Oasis 3 without modification?

Yes, the cell measures 67.54 x 32.80 x 3.60 mm and is built as a direct replacement for the ST29 and 58-000252 packs used in the Kindle Oasis 3.

How do I install the replacement battery and what is the common mistake to avoid?

Open the rear case, disconnect the old pack, connect the new DS-CS-AST290SL to the same header, and reseal the device; the step often missed is forgetting to reconnect the flex cable before closing the chassis.

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