• BetaFPV BT2.0 550mAh 1S LiHV Battery 4-pack, 3.8V 40C/80C 2.09Wh label view
  • Four 550mAh BetaFPV BT2.0 1S LiHV batteries angled view, showing slim pack shape and connector end
  • Single 550mAh BT2.0 1S LiHV battery on digital scale, close-up of BT2.0 connector and pack size
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BetaFPV BT2.0 550mAh 1S LiHV Battery 3.8V 40C/80C 2.09Wh for Whoop Drones (4PCS)

BetaFPV BT2.0 550mAh 1S LiHV Battery 3.8V 40C/80C 2.09Wh for Whoop Drones (4PCS)

BETAFPV

$27.39 USD
$27.39 USD
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Overview

The BetaFPV BT2.0 550mAh 1S Battery (4PCS) is a 1S LiHV battery designed for 1S whoop drones, focusing on stable output and reduced voltage sag. It is rated at 40C continuous / 80C burst and uses the BetaFPV BT2.0 connector to help lower connector resistance for more efficient discharge and longer usable flight time on 75–80mm whoops.

Key Features

  • BT2.0 connector design upgrades the crimped pins to a 1.0mm banana connector and increases cross-sectional area to reduce internal resistance.
  • 40C (continuous) / 80C (burst) discharge rating for stronger 1S performance.
  • Designed to help minimize voltage sag and reduce low-voltage warning interruptions during flight.
  • Stable current/voltage output and high efficiency for 1S brushless drones.
  • Compatible use case stated for BETAFPV 1S whoop models that use BT2.0 450mAh batteries, including Meteor75, Meteor75 HD, Meteor75 Pro, Meteor75 Pro HD, Cetus Pro, and Cetus X (double 1S battery in serial).

Specifications

Item BT2.0 550mAh 1S Battery
Capacity 550mAh
Discharge Rate (C-Rate) 40C / 80C
Voltage 3.8V
Battery Type LiHV (3.8~4.35V)
Energy (label) 2.09 Wh
Dimensions (image callout) 69.5mm / 2.74in (L) x 15.5mm / 0.61in x 6.7mm / 0.26in
Dimensions (listed) 69.5*16.2*6.5mm
Connector BetaFPV BT2.0 connector
Weight 13.99g/pc

550mAh vs 450mAh (Referenced Comparison)

BT2.0 550mAh 1S Battery BT2.0 450mAh 1S Battery
Weight 13.99g/pc 12.70g/pc
Dimension 69.5*16.2*6.5mm 61*15*7.5mm
C-Rate 40C/80C 30C/60C
Capacity 550mAh 450mAh

Additional referenced test notes: discharge-current comparison is stated at 13.5A for the graph test; discharge is also referenced at 22A (40C).

Notes

  • Flight time testing note is stated as based on 4.35V–3.2V.
  • Installation note: remove the battery plate if installing this battery on Cetus Pro.

What’s Included

  • 4 × BT2.0 550mAh 1S Battery

For product compatibility questions or after-sales support, contact support@rcdrone.top or visit https://rcdrone.top/.

FAQ

  • How to maximize battery life: refer to the official BETAFPV support article “Battery Safety and Maximizing Battery Life”.

Details

BetaFPV BT2.0 550mAh 1S LiHV battery pack with BT2.0 connector, 3.8V 40C/80C rating

Built for 1S whoop drones, the BT2.0 550mAh LiHV pack delivers stable power with a high 40C/80C discharge rating.

BT2.0 550mAh 1S battery dimensions: 69.5mm long x 15.5mm wide x 6.7mm thick

Compact sizing makes it a practical fit for many 75–80mm whoop frames while adding extra capacity over smaller packs.

Size comparison of BT2.0 550mAh vs 450mAh 1S whoop batteries, highlighting the longer 550mAh packVoltage vs time discharge comparison chart at 13.5A for BT2.0 550mAh 40C battery vs 450mAh 30C battery

A discharge test at 13.5A highlights the 550mAh pack’s steadier voltage curve versus a 450mAh alternative.

Voltage discharge curve for BT2.0 550mAh 1S battery at 22A (40C) load over timeFlight time comparison table for BT2.0 450mAh vs 550mAh 1S batteries on Meteor75, Cetus Pro and Cetus X

Real-world flight time comparisons across popular BETAFPV whoops indicate longer sessions with the 550mAh option (testing noted from 4.35V to 3.2V).

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