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
Rectangular black lithium-polymer battery, 43 by 35.8 by 13 mm

Centenex Electronics

Centenex Electronics DS-CS-ETC800SL Replacement Battery 3.7V 950mAh Li-Polymer Black

SKU CH-T2VY-B3NFA

A 3.7 V, 950 mAh lithium-polymer replacement battery for Eartec CS-800LI ComStar wireless headsets

  • Product typeBluetooth Headset
  • Direct replacement for Eartec CS-800LI headsets
  • 7 V 950 mAh lithium-polymer cell delivers 3.52 Wh
  • Compact 43.00 x 35.80 x 13.00 mm form factor
  • Brand-new OEM-compatible unit ready to install
  • Black finish matches original headset aesthetics

Direct Replacement Battery

The Centenex Electronics DS-CS-ETC800SL is a 3.7V 950mAh lithium-polymer cell built to replace the original Eartec CS-800LI battery in ComStar wireless headsets. It delivers 3.52Wh of capacity in a black 43.00 x 35.80 x 13.00 mm pack that fits the existing compartment without modification.

Steady Talk-Time Delivery

Under continuous use the cell maintains its rated 0.95 Ah output without the voltage sag that appears in aged packs, keeping the headset active through a full shift instead of cutting out mid-call. The lithium-polymer chemistry holds a stable discharge curve so audio quality and wireless range stay consistent until the charge is genuinely depleted.

Upgrade From Worn Originals

This unit replaces a depleted CS-800LI that no longer holds a usable charge, restoring the headset to its factory run-time without buying a new headset. The jump is worth it when talk time has fallen below half a day or the battery swells, but it will not add extra capacity beyond the original 950mAh specification.

How it compares

Measured against everything we stock in Earbuds & Over-Ear Headphones, at today’s prices. Recalculated every night.

Price $18.99
Cheaper than about 63% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand nameCentenex Electronics
Model nameDS-CS-ETC800SL
Product typeBluetooth Headset

Questions about this item

How much heat does the 3.7 V 950 mAh pack generate when the headset runs all day?

The 3.52 Wh cell stays cool during continuous talk time; no active cooling is needed.

Which existing connector on the Eartec CS-800LI ComStar headset does this battery plug into?

It matches the original CS-800LI socket, so the headset you already own is the only hardware required.

Will the 43.00 × 35.80 × 13.00 mm form factor fit the same compartment used by older Eartec ComStar packs?

Yes, the dimensions are identical to the factory battery, so it slides into the existing bay without modification.

More in Earbuds & Over-Ear Headphones

Similar items