BetaFPV BT2.0 450mAh 1S 30C HV LiPo Battery

BetaFPV BT2.0 450mAh 1S 30C HV LiPo Battery (Pack of 4)

The BetaFPV BT2.0 450mAh 1S 30C HV LiPo battery is engineered for power, reliability and extended flight times, with consistent high-discharge performance.

The BT2.0 connector lowers the internal resistance of the connector, which the listing says reduces voltage sag and makes discharge more efficient. It is also more durable and can pass more current.

The listing says it is a perfect fit for the Emax Tinyhawk.

Key features

• 450mAh: extended flight times.

• 30C/60C rate: high discharge.

• BT2.0 connector: lower resistance and less voltage sag.

• Stable output: stable current and voltage.

• Durable connector: passes more current.

• Fits the Emax Tinyhawk.

How a 1S HV whoop battery works

A 1S whoop battery is a single lithium cell with a small connector. HV (LiHV) versions can be charged to 4.35V per cell instead of 4.2V, which stores a little more energy, but they must be charged with a charger set to the HV mode and the correct current. A high C rating shows that the pack can deliver high burst current, which matters for the small brushless motors in tiny whoops.

The connector is part of the performance: a lower-resistance connector wastes less power as heat and reduces voltage sag under load. Match the connector to your drone (BT2.0 here) and never force it in the wrong way round.

Small packs are easy to damage. Charge them at no more than 1C unless the maker states otherwise, never charge a puffed or dented cell, and store them at about 3.8V. A voltage tester or a low-voltage alarm helps you land before the cell is over-discharged.

Log how each pack behaves over time. Note the resting voltage after a flight, how warm the pack is and how much capacity the charger puts back in. A pack that heats up more than usual, sags sooner or shows one cell drifting away from the others is telling you that it is ageing, and it should be retired before it fails in the air. Label your packs so you can rotate them evenly.