Introduction

If you’ve been in the drone hobby for a while, you’ve probably noticed batteries labeled HV or LiHV alongside traditional LiPo options. High Voltage LiPo batteries have been gaining popularity, especially in the FPV micro drone and tiny whoop racing scenes. But what exactly makes a battery high voltage, and is it worth switching from your standard LiPo setup?

What Are High Voltage (HV) LiPo Batteries?

High Voltage LiPo batteries, often labeled as LiHV, are a variation of standard LiPo battery technology that can be safely charged to a higher voltage per cell:

• Standard LiPo:Nominal voltage 3.7V per cell, maximum charge voltage 4.2V per cell
• High Voltage LiPo (LiHV):Nominal voltage 3.8V per cell, maximum charge voltage 4.35V per cell

That extra 0.15V per cell translates to approximately 5-10% more stored energy in the same physical battery – a meaningful improvement, especially in small batteries where every milliamp-hour counts.

Benefits of HV LiPo Batteries

1. More Energy in the Same Package

The primary advantage of HV batteries is higher energy density. This translates to longer flight times (approximately 5-10% longer), more punch and power at the beginning of a flight, and higher voltage throughout the discharge curve.

2. Better Performance in Micro Drones

The benefits of HV technology are most pronounced in small batteries (1S-4S, 300-850mAh), which is why HV has become the standard in tiny whoop and micro FPV racing.

3. Higher Initial Voltage

An HV battery starts at a higher voltage (4.35V vs 4.2V per cell), which means more power available right off the charger. For racing applications, this can translate to faster lap times.

Drawbacks and Considerations

1. Shorter Cycle Life

The higher charge voltage puts more stress on the battery’s chemistry, resulting in somewhat shorter cycle life compared to standard LiPo. An HV battery might last 150-200 cycles before noticeable degradation, while a standard LiPo might last 200-300 cycles.

2. Requires HV-Compatible Charger

You must use a charger that supports LiHV chemistry. Quality chargers like the Gens ace iMars S100, D300, and D1000 Plus all support LiHV charging. G-Tech smart batteries automatically communicate their chemistry to compatible chargers.

3. More Sensitive to Over-Discharge

HV batteries can be more sensitive to deep discharge. Discharging an HV battery below 3.0V per cell causes more damage than the same discharge on a standard LiPo. Set conservative low-voltage alarms when flying HV packs.

Popular Tattu HV Battery Options

Micro and Tiny Whoop Batteries

• 300mAh 1S 75C 3.8V HV with JST-PHR (5pcs):For 65-75mm tiny whoops
• 270mAh 1S 75C 3.8V HV with JST-PHR (5pcs):Lightweight for ultra-light builds
• 450mAh 1S 75C 3.8V HV with BT2.0 (5pcs):BT2.0 connector for lower resistance
• 550mAh 1S 75C 3.8V HV with BT2.0 (5pcs):Higher capacity for longer flights

2S-4S FPV Batteries

• 450mAh 2S 95C 7.6V HV with XT30 (Long Pack):For 2-inch FPV drones
• 550mAh 3S 95C 11.4V HV with XT30 (Long Pack):For 3-inch FPV
• 850mAh 4S 95C 15.2V HV with XT30 (Long Pack):Max capacity for 4-inch class

UAV High Voltage Batteries

• G-Tech 6S 11000mAh 22.8V 25C HV:For medium UAVs
• G-Tech 6S 17000mAh 22.8V 15C HV:For agricultural drones
• G-Tech 6S 23000mAh 22.8V 25C HV:For large UAV platforms

How to Charge HV Batteries

1. Select LiHV modeon your charger (not LiPo mode)
2. Set the correct cell count(S rating)
3. Set charge current(1C recommended for best lifespan)
4. Always balance charge
5. Store at 3.85V per cell

HV vs Standard LiPo: Which Should You Choose?

Choose HV If:

• You fly micro drones or tiny whoops (1S-2S)
• You participate in micro drone racing
• You have an HV-compatible charger
• You’re willing to accept slightly shorter battery life for more performance

Choose Standard LiPo If:

• You fly 5-inch or larger FPV drones
• You want maximum battery lifespan
• You have older chargers that don’t support LiHV
• You fly industrial or agricultural UAVs

Conclusion

High Voltage LiPo batteries offer a genuine performance advantage, particularly in micro and small FPV drone applications. The 5-10% increase in energy density translates to longer flight times and more punch. For micro drone pilots, HV has essentially become the standard. For larger drones, the decision is less clear-cut, and standard LiPo remains a valid choice.