VIFLY ToothStor 4 Port 2S LiPo/LiHV Balance Charger with Storage Mode

Features:

●【4 Port 2S Balance Charger with Storage Mode】You can balance charge four 2S batteries at the same time. And they are 4 independent charging channels, not necessary to ensure the batteries are all the same voltage or the same size. In addition to charging the battery to full voltage, you can charge or discharge it to storage voltage for long time storage.

●【Colorful LCD Screen, Intuitive Interface】VIFLY ToothStor installs high quality LCD screen, the charging status is displayed clearly and the intuitive interface makes the operation very simple.

●【Charge via Standard Balance Lead Only】VIFLY ToothStor charges batteries via the standard balance lead only (JST-XH2.54), that conveniently eliminating the need to connect the power lead like XT30, T-plugs, etc.

●【Strong Heat Dissipation Capability】The fan and big heat sink would effectively dissipate the heat to prevent the unit from overheating. This greatly improves the efficiency and speed of the discharging.

●【Multiple Power Input】It supports Type-C, XT60 and DC power input. Type-C supports PD3.0 protocol that requests the input power must be higher than 65W.

●【Memory Function】VIFLY ToothStor had the memory feature of remembering last time settings, no need to set the charge current every time you turn it on.

●【Buzzer Indication】VIFLY ToothStor added the buzzer to beep when one charging circle finished, if you don’t like beeping, you can turn the buzzer off manually.

4 Port 2S Battery Balance Charger with Storage Mode

You can balance charge four 2S batteries at the same time. And they are four independent charging channels, not necessary to ensure the batteries are all the same voltage or the same size. In addition to charging the battery to full voltage, you can charge or discharge it to storage voltage for long time storage.

Colorful LCD Screen, Intuitive Interface 

VIFLY ToothStor installs high quality LCD screen, the charging status is displayed clearly and the intuitive interface makes the operation very simple. 

Charge via Balance Port Only

VIFLY ToothStor charges batteries via the standard balance lead only (JST-XH2.54 or BT3.0), that conveniently eliminating the need to connect the power lead like XT30, T-plugs, etc.

Multiple Power Input

VIFLY ToothStor 2S charger supports Type-C, XT60 and DC power input. Type-C PD3.0 protocol requests the input power must be higher than 65W.

Strong Heat Dissipation Capability 

The fan and big heat sink would effectively dissipate the heat to prevent the unit from overheating. This greatly improves the efficiency and speed of the discharging. 

Storage Charger and Discharger

VIFLY ToothStor is a combination of 2S charger and discharger. It has 4 target voltages per cell (3.8V/3.85V/4.2V/4.35V), set your target voltage like 3.8V/cell (LiPo Storage Voltage), it will start the charging or discharging process automatically when the battery is lower or higher than 3.8V.

Specifications：

Buying Guide: VIFLY ToothStor 4 Port 2S LiPo/LiHV Balance Charger

A Purpose-Built 2S Charger for Toothpick and Small FPV Pilots

If you mainly fly 2S toothpicks, lightweight freestyle quads, or compact Cinewhoops, charging batteries one at a time with a general-purpose charger quickly becomes inconvenient.

The VIFLY ToothStor 4-Port 2S LiPo/LiHV Balance Charger is built around a simple goal: charge, balance, discharge, or storage-charge up to four 2S batteries independently from one compact device.

It supports standard 2S batteries with XH 3-pin balance connectors and BT3.0-equipped packs. More importantly, it can automatically charge or discharge each connected battery to the selected target voltage. That makes it especially useful for pilots who often finish a flying session with packs at different voltage levels.

For a 2S-focused pilot, this is not intended to replace a full 1–6S balance charger. It is a faster, more convenient dedicated solution for small 2S packs.

Test and User Experience Highlights

Independent testing of the ToothStor supports its main purpose: making four-port 2S charging and storage management more convenient.

A hands-on review using a calibrated multimeter found that the charger’s displayed cell voltages closely matched the meter readings. In the same test, the charger stopped slightly below the selected 4.20V charge target, at approximately 4.19V per cell, and slightly above the 3.85V storage target, at approximately 3.87–3.88V per cell. These results are not a safety concern because the charger did not overcharge the packs, but pilots who require exact target voltages should be aware of the small variation. 

The same review found the 0.2A per-port discharge rate relatively slow, which is normal for a compact charger. However, for a typical 2S 450mAh pack, reducing a fully charged pack to storage voltage took under an hour—and four packs can be processed at the same time.

The practical result is straightforward:

● The ToothStor is very useful for charging multiple 2S packs before a session.

● It is equally useful for bringing partially charged packs to storage voltage afterward.

● It is best suited to small 2S batteries rather than large-capacity packs that need high charging current.

Recommended 2S FPV Battery Pairing

The ToothStor is designed for 2S batteries used in Toothpick, lightweight freestyle, and small Cinewhoop builds.

For a clean 2S charging setup, pair it with:

● 2S LiPo or LiHV batteries with an XH 3-pin balance connector.

● BT3.0 2S batteries, where applicable.

● A 65W or higher USB-C PD power adapter when using USB-C input at higher charging demand.

● A suitable XT60-connected field battery or DC power supply when charging away from mains power.

The charger supports three input methods:

● USB-C PD 3.0

● XT60

● DC 5.5 × 2.1mm barrel input

For full four-port output, use an adequately rated power source. A weak USB-C adapter may power the charger but limit practical charging performance.

Why Choose the VIFLY ToothStor?

Four independent 2S charging ports

The ToothStor can process up to four 2S packs at the same time. Each port operates independently, so batteries do not need to begin at the same voltage or have the same capacity.

This is a major advantage for pilots who own several 2S packs and want to prepare a full flight session without waiting for individual charge cycles.

Automatic charge and storage management

The charger offers four selectable target voltages per cell:

● 3.80V storage

● 3.85V storage

● 4.20V LiPo full charge

● 4.35V LiHV full charge

When you select a storage voltage, the ToothStor automatically decides whether the battery needs charging or discharging. This is much more convenient than manually monitoring partially charged packs after a flying day.

Dedicated balance charging for small 2S packs

The ToothStor supports up to 1.5A per port and includes balancing capability. It is designed for the small batteries commonly used in 2S FPV, where a dedicated multi-port charger is often more convenient than a larger bench charger.

Compact field-friendly power options

USB-C PD, XT60, and DC input make the ToothStor practical for home benches, race events, and travel setups. You can power it from an appropriate USB-C PD supply, a DC supply, or a compatible field battery.

What to Keep in Mind

The ToothStor is deliberately specialized.

● It supports 2S batteries only.

● It is not suitable for 1S Tiny Whoop packs.

● It does not replace a conventional charger for 3S, 4S, 5S, or 6S batteries.

● It connects through the 2S balance lead or BT3.0 connection, not directly through an XT30 discharge plug.

● Its discharge current is modest, so storage-discharging larger packs takes time.

If your fleet is mainly 2S, these limitations are not drawbacks—they are simply the reason the ToothStor remains compact and easy to use.

Brief Alternative: VIFLY NEW WhoopStor 3

The VIFLY NEW WhoopStor 3 1S Battery Storage Charger is the better choice for Tiny Whoop pilots flying 1S packs.

It supports six independent 1S charging ports, with PH2.0 and BT2.0 connectors. BT2.0 ports are also compatible with A30 batteries. Like the ToothStor, it supports LiPo, LiHV, charging, discharging, and storage modes—but it is built specifically for 1S batteries.

Choose the ToothStor if your batteries are 2S. Choose the WhoopStor 3 if your batteries are 1S.

2S Toothpick or Cinewhoop packs: choose ToothStor.
1S Tiny Whoop packs: choose WhoopStor 3.

VIFLY ToothStor vs. VIFLY NEW WhoopStor 3

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