8.4V 1A Power Adapter Li-ion Battery Charger with LED Indicator 2.1x5.5mm Interface
Quick take
This 8.4V 1A Li-ion charger uses a 5.5 x 2.1mm barrel connector and is made for 7.2V to 8.4V 2-string lithium battery packs. The LED indicator changes as charging progresses, and the unit includes several protection modes. The biggest buying caveat is matching the connector size and the battery’s required voltage and charging current.
Pros and cons
Pros
- Designed for 2-string lithium battery packs in the 7.2V to 8.4V range (output is DC 8.4V at 1A).
- 5.5mm barrel interface with guidance to verify size before buying (5.5 x 2.1mm compatibility).
- LED status indicator (red for charging, green when reaching a high charge level/full).
- Includes multiple protections such as over-voltage, over-current, and short-circuit protection.
Cons
- Compatibility depends heavily on correct connector dimensions and the battery pack’s voltage requirement, or it may not work.
- 1A output means it may take longer to charge larger packs compared with higher-amperage chargers.
What buyers think
Buyer-review evidence is strongly consistent around one theme: this charger works well as a replacement when the voltage and plug size match the device or battery pack. Several reviewers describe it as a reliable swap for chargers used in specific equipment, including cases where they took time to confirm connector and rating compatibility beforehand. A couple of comments also suggest that complaints about a connector not fitting are often related to mating socket compatibility rather than the charger’s intended connector type. Overall, buyer-review evidence is limited in detail about long-term durability beyond “worked over time,” but the dominant pattern is correct-fit success when specifications align.
Who this charger is for
This is a practical choice if you need an external DC 8.4V, 1A charger for a 2-string lithium battery pack that expects 7.2V to 8.4V charging. It is also a good fit when you want an easy visual cue during charging thanks to the LED indicator and you prefer a charger with built-in safety protections (over-voltage, over-current, short circuit).
Key specs and what they mean
Output voltage and current
The charger provides DC 8.4V at 1A. If your battery pack’s required charge voltage is in this range (7.2V to 8.4V for the 2-string pack type), this aligns with typical charger matching rules. If your device expects a different voltage or a different current rating, using this charger could lead to poor charging performance or incompatibility.
Connector size matters most
The charger uses a 5.5mm barrel connector and is meant to be compatible with 5.5 x 2.1mm style interfaces. The charger’s success largely depends on your device’s socket using the same inner and outer dimensions. If the connector size is off, the charger may not seat properly or may not work at all.
LED indicator behavior
Expect the LED to follow the charging cycle: it is red while charging and transitions to green at a high charge level. The charger continues with a smaller current near completion to reach full charge, which is consistent with a constant-current to constant-voltage charging approach.
Pros and cons, in real buying terms
Pros
- Good replacement potential: Reviews point to dependable results when the voltage/current and connector size match the original charger needs.
- Clear charging status: The LED shifts from red to green as the pack approaches a full charge state.
- Safety features included: Multiple protection modes (including over-voltage, over-current, and short-circuit) add reassurance for everyday use.
- Worldwide-style input: It supports an AC input range suitable for common 110V/220V regions (AC 90-264V).
Cons
- One mismatch can stop the charger: If your battery device uses a different barrel size, you may need to find a different charger model rather than force-fit or “make it work.”
- Charging speed is limited to 1A: If your battery pack is larger, you may prefer a higher-amperage option for faster charging.
Price and availability
The listed price may vary over time, and availability can change quickly. If you are buying as a replacement, confirm compatibility (connector size and required voltage/current) first, then check the latest listing price and stock status using the link below.
How to confirm compatibility before you buy
- Check the battery pack type: This charger is intended for 2-string lithium packs.
- Verify required voltage: It outputs DC 8.4V, meant for 7.2V to 8.4V battery pack charging.
- Verify the connector dimensions: Look for 5.5 x 2.1mm barrel interface compatibility (5.5mm round barrel, with the correct inner pin size).
- Match charging current expectations: Output is 1A, so charging time will depend on your pack capacity.
Verdict
If you need an 8.4V 1A charger for a 7.2V to 8.4V 2-string lithium battery pack and your device uses a 5.5 x 2.1mm barrel connector, this is a straightforward replacement option with LED charge indication and multiple protection features. The main reason people get burned with chargers like this is connector mismatch or incorrect voltage expectations, so spend a minute verifying those two details and you will be much more likely to get a smooth fit.
FAQ
Is this charger compatible with my battery pack?
It is designed for 2-string lithium battery packs that require charging in the 7.2V to 8.4V range, using a charger output of DC 8.4V at 1A.
What barrel connector size does it use?
It uses a 5.5mm barrel interface and is meant to be compatible with 5.5 x 2.1mm connectors. Make sure your device socket matches these dimensions before buying.
What do the LED colors mean?
The LED is red during charging, and it turns green when the battery reaches a high charge level (and the charger continues at a small current to reach full charge).
Does it support different wall voltages?
Yes. It supports an input voltage range of AC 90-264V, which covers common 110V and 220V regions.
Will it charge quickly?
Because the charger output is limited to 1A, charging speed depends on your battery pack capacity. Larger packs may take longer than with higher-amperage chargers.
What happens if there is a protection fault?
The charger includes over-voltage, over-current, overload, and short-circuit protection. When it enters a protection mode, the LED flashes red, and you should unplug the adapter and check for a short circuit or power overload condition before restarting.
Specifications
| Product Title | 8.4V 1A Power Adapter Li-ion Battery Charger with LED Indicator 2.1x5.5mm Interface Suitable for 7.2V 7.4V 8.4V 2-String Lithium Battery Pack |
|---|---|
| Category | Electronics > Household Batteries, Chargers & Accessories > Battery Chargers |
| Brand | iCreatin |
| Manufacturer | iCreatin |
| Model Number | ba645eeb-fe23-4424-bb52-1df7354103eb |
| Color | Green |
| Material | Plastic, Polycarbonate (PC) |
| Item Weight | 0.07 Kilograms |
| Connector Type Used on Cable | Barrel Connector |
| Input Voltage | 220 Volts |
| Amperage | 1 Amps |
| Form Factor | box |
| Maximum Power | 8.4 Watts |
| Output Current | 1 Amps |
| Output Voltage | 8.4 Volts |
| Output Wattage | 8.4 Watts |
| Enclosure Material | Plastic, Polycarbonate (PC) |
| UPC | 708191202394 |
| Mfr Part Number | IC-AD001D |
| Unit Count | 1.0 Count |
| Specification Met | CE, FCC |
| Connector Type | Barrel Connector |
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