After I noticed the discharge of the GEPRC WooPower W63 1S Charger, I used to be instantly intrigued by the specs and knew I had to purchase one to check. Spoiler: I’m impressed—and I imagine this could possibly be the brand new king of 1S whoop battery chargers in 2025! With highly effective and versatile efficiency, the WooPower provides six impartial charging ports, every able to charging as much as 3A. You’ll be able to concurrently cost, discharge, or storage-charge as much as six 1S batteries, making it extraordinarily handy and environment friendly. On this evaluation, I’ll examine the WooPower to the favored Vifly Whoopstor V3, consider how nicely it performs, and present you the way it works.
Try my purchaser’s information on Tiny Whoops, associated elements and equipment: https://oscarliang.com/best-tiny-whoop/
The place to Purchase
Get the GEPRC WooPower Charger from:
Within the field:
- WooPower Charger x1
- USB-C to USB-C Cable x1
- Person Handbook x1
Specs
- Enter Energy Connectors: XT60 / USB Kind-C (PD 3.0)
- Enter Voltage Vary: 7–26V (2S to 6S)
- Minimal Enter Energy: 100W (for full load)
- Display screen: 1.54-inch IPS show, 240×240 decision
- Output Connectors: 6 impartial ports, every with PH2.0 and BT2.0 (A30 suitable)
- Max Output Energy: 78W
- Max Charging Present: 3.0A per port
- Max Discharging Present: 0.5A per port
- Working Temperature: 0°C–75°C
- Supported Battery Varieties: 1S LiPo / LiHV / LiFe
- Features: Cost / Discharge / Storage
- Dimensions: 125 x 61 x 28 mm
- Weight: 160g
Design
The Vifly Whoopstor V3 has been my go-to 1S charger for the previous two years—can the GEPRC WooPower lastly dethrone it? Let’s break it down.
At 160g, the WooPower is barely bigger and heavier than the Whoopstor V3 (142g), however this distinction is negligible. Each are compact and travel-friendly, simply becoming right into a gear bag for area use.
Just like the Whoopstor, the WooPower additionally has 6 charging ports, every that includes PH2.0 and BT2.0 connectors (additionally suitable with A30 batteries).
The place the WooPower shines is its bigger display screen, which permits it to show extra data directly.
That stated, the construct high quality of the Whoopstor feels a bit extra strong and sturdy. The WooPower makes use of barely cheaper and thinner plastic, however except you propose to be tough with it, this shouldn’t be a dealbreaker.
One attainable situation with the WooPower is the cooling fan placement—it’s situated on the underside of the charger. This doesn’t depart a lot room for airflow when it’s sitting flat on a floor. In case you plan to cost at larger currents, take into account putting it on its aspect to enhance airflow. GEPRC ought to take into account relocating the fan to the aspect, just like the Whoopstor’s design.
Charging Capabilities
The WooPower boasts a formidable 3A charging present per port, whereas the Whoopstor V3 is proscribed to 1.3A. In sensible phrases, 1.3A is already greater than ample for many tiny whoop batteries—comparable to 1S 300mAh, 450mAh, and even 550mAh.
If you wish to lengthen the lifetime of your LiPo batteries, charging at 1C (i.e., charging at a present equal to the battery’s capability) is mostly advisable. Meaning:
- 300mAh → 0.3A
- 450mAh → 0.45A
- 550mAh → 0.55A
So whereas 3A per port is spectacular, it might be overkill for many customers. That stated, for those who’re in a rush and select to cost at larger present, be sure that to intently monitor battery temperatures to keep away from overheating or fireplace danger.
Impartial Charging Ports
One main benefit of the WooPower over the Whoopstor V3 is its impartial charging ports. On the Whoopstor, charger settings apply globally to all six ports. In distinction, the WooPower means that you can set totally different parameters per port—making it far more versatile.
For instance, you’ll be able to:
- Cost 4 batteries at totally different currents
- Discharge a battery
- Put one other into storage cost
All on the identical time.
This stage of management is a large profit when managing batteries of various sizes or varieties, or when flying a number of quads with totally different battery necessities.
Energy Enter Choices
The WooPower could be powered through USB-C (PD 3.0) or an XT60 connector. It doesn’t help 5521 barrel jack enter just like the Whoopstor, however this possible gained’t be a difficulty for many customers, as USB-C and XT60 are extra frequent connectors.
As a result of the WooPower helps larger charging currents, it additionally requires the next wattage energy supply to run at full functionality:
- ViFly Whoopstor V3: 40W
- GEPRC WooPower W63: 100W
That stated, you’ll be able to nonetheless use the WooPower with a decrease wattage energy provide—simply scale back the charging present accordingly.
There are a number of methods you’ll be able to energy the charger, embrace:
- PD energy adapter through USB-C
- Bench energy provide (e.g., ToolkitRC P200)
- Fashionable LiPo chargers with DC output function (12V–24V through XT60)
- 4S or 6S LiPo battery for transportable area charging
Extra Options
GEPRC included a variety of considerate options:
- Charged/discharged mAh show – you realize precisely what number of mAh has been put into the packs, or discharged.
- Enter voltage warning – In case you’re powering the charger with a battery, it can cease charging and provide you with a warning when the enter voltage drops under your set threshold. This helps forestall over-discharging your energy supply.
- Security parameters – You’ll be able to set limits for charging time, complete capability, and temperature. That is particularly essential when charging at larger currents, serving to to forestall charger overheating or injury.
How you can Use
In terms of charging, the WooPower is easy: merely plug in your battery, and charging begins routinely. Sadly, there’s no button to pause or cease charging—it can solely cease when the battery is absolutely charged or for those who unplug it manually.
If you wish to change charging settings, you will need to accomplish that earlier than plugging within the battery. Use the scroll wheel to pick out the port you wish to configure, then press it to enter the charging settings menu. Navigation is simple with the scroll wheel.
You’ll be able to customise:
- Battery kind
- Charging mode (Cost, Discharge, Storage)
- Present per port
It’s also possible to alter the top voltage:
- For LiPo, from 4.20V to 4.25V
- For LiHV, solely as much as 4.35V
In discharge mode:
- Minimal finish voltage for LiPo: 3.40V
- Minimal for LiHV: 3.50V
You’ll be able to apply the identical settings to a number of ports, saving effort and time when managing a number of batteries.
Within the System Settings menu (maintain down the CH button), you’ll be able to alter settings like:
- Show brightness
- Beeper quantity
- Enter voltage warning
- Language
These choices are just like these on a full-featured sensible charger.
Testing
Enter Voltage Measurements
| Voltage (V) | |
| Multimeter | 15.03 |
| Charger | 15.0 |
Port Voltage Measurements
| Voltage (V) | |
| Multimeter | 3.816 |
| Charger Port #1 | 3.82 |
| Charger Port #2 | 3.81 |
| Charger Port #3 | 3.81 |
| Charger Port #4 | 3.82 |
| Charger Port #5 | 3.81 |
| Charger Port #6 | 3.81 |
Finish Voltage When Charging Full
| LiPo (4.20V) | LiHV (4.35V) | |
| Multimeter | 4.182 | 4.318 |
Finish Voltage When Discharging Full
| LiPo (3.40V) | LiHV (3.50V) | |
| Multimeter | 3.440 | 3.489 |
Finish Voltage When Storage Charged Full
| Battery 1 (3.85V) | Battery 2 (3.85V) | |
| Multimeter | 3.826 | 3.817 |
mAh Reporting Accuracy (Charged from 3.2V to 4.35V)
| 1S 260mAh LiHV | 1S 300mAh LiHV | |
| Charger | 267 | 314 |
The testing reveals a really small discrepancy in voltage readings between the charger and my digital multimeter. Nonetheless, it’s minor and never a priority for passion use. The charger additionally tends to barely undercharge batteries, which isn’t vital a nasty factor, because it’s safer than overcharging. It’s very near the goal voltage anyway.
As for mAh reporting, the readings are usually overestimated by about 3% to 4%, not preferrred and I want there’s a technique to calibrate it.
Downsides
Discharging is sort of sluggish – Solely goes as much as 0.4A per port, not 0.5A as claimed within the specs.
Moreover, the discharge doesn’t appear to work when batteries are at full cost (i.e. 4.35V). I needed to discharge the battery barely under 4.35V with a quad earlier than the charger begins discharging. This could possibly be a bug.
Last Ideas and Suggestions
Each the ViFly Whoopstor V3 and the GEPRC WooPower W63 are wonderful 1S battery chargers. Nonetheless, the WooPower W63 has now changed the Whoopstor V3 as my go-to 1S charger. It’s extra highly effective, versatile, and consists of superior options like:
- Individually controllable ports
- Security options like enter voltage, charging time and temperature warnings
- mAh monitoring
All of this, at a worth level similar to the Whoopstor, makes it a standout choice in 2025.
That stated, for those who already personal a Whoopstor V3 and are happy with it, there’s no pressing want to change. It’s nonetheless a strong, dependable charger, particularly for those who primarily cost one kind of battery.
Nonetheless, for those who’re available in the market for a brand new 1S charger, otherwise you need extra management and comfort, the WooPower W63 is completely my best choice.