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 lithium-polymer battery pack, blue wrapper, two wire leads

Cameron Sino 300mAh 24.0V Li-Polymer Battery Besam 505186-BB

SKU CH-YND1-S6C4Z

300 mAh 24.0 V lithium-polymer replacement for Besam automatic door openers EMC, EMCM and EU-EUD

  • Battery pack size81.25 × 29.46 × 29.1
  • Battery typeLithium polymer
  • Battery capacity300 mAh
  • Battery voltage rating24 V
  • Details81.25 × 29.46 × 29.1
  • Product typeLithium polymer
  • 300 mAh capacity powers Besam door operators reliably
  • 0 V output matches original equipment specifications
  • 25 × 29.46 × 29.10 mm form factor fits EMC, EMCM and EU-EUD models
  • ISO 9001, RoHS and CE certified for safety compliance
  • Built-in protection guards against over-charge, over-discharge and short circuits

Purpose-built replacement

This lithium-polymer pack is engineered as a direct replacement for Besam automatic door-opener models EMC, EMCM and EU-EUD. It supplies 24.0 V and 300 mAh, matching the original electrical specification so the operator receives the correct voltage and capacity without adaptation.

Ready-to-fit construction

The cell arrives with a fully decoded protection chip that communicates with the host controller exactly like the factory unit. Over-charge, over-discharge, over-voltage and short-circuit safeguards are integrated, and the pack is cushioned in shock-absorbing foam for transit protection.

Capacity and limits

At 7.20 Wh the battery supports normal daily cycling of the door operator; extended hold-open periods or high-traffic installations will deplete the reserve faster. The 81.25 × 29.46 × 29.10 mm footprint fits the designated compartment, so larger-capacity alternatives cannot be accommodated without mechanical changes.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $21.99
Pricier than about 80% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameCameron Sion
Model nameBesam automatische Turoffnung EMC automatische Turoffnung EMCM automatische Turoffnung EU-EUD EMC EMCM EU-EUD
Part numberBesam 505186-BB 654699 41A017CA00001 06000142
Product typeLithium polymer
Power
Battery typeLithium polymer
Battery capacity300 mAh
Battery voltage rating24 V
In the box
Battery pack size81.25 × 29.46 × 29.1

Questions about this item

How often will the 300mAh lithium-polymer cell need replacing in a Besam EMC door operator?

Typical cycle life for this chemistry is several hundred full charge-discharge cycles; with daily automatic-door use the pack usually lasts multiple years before capacity drops below useful levels.

What is the first limit reached when the battery powers the motor continuously?

The 7.20 Wh capacity is the limiting factor; sustained high-current draw will deplete the 300 mAh charge well before thermal limits are reached.

Does the pack generate noticeable heat or noise during all-day operation?

No moving parts and low internal resistance mean silent running; only a slight warmth appears under heavy load, well within the normal operating range for lithium-polymer cells.

More in Household Batteries & Chargers

Similar items