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7.4V 3000mAh 2S Li-ion Battery SM-4P
PCEONAMP 7.4V 3000mAh 2S Li-ion battery SM-4P – Long-Run Power for Gel Blasters & RC Cars
Built for gel blasters (gel cannons, water bullet guns), 1/24–1/10 RC cars, and RC boats, this 7.4V 3000mAh 2S Li-ion battery SM-4P delivers steady 7.4V output with a 2500mAh+ effective capacity — extended runtime for gel blaster battles and casual RC driving.
Key Specs:
• 2S (2 cells), 7.4V nominal (3.7V/cell), 8.4V full charge (4.2V/cell)
• 3000mAh rated / ~2500mAh effective | Li-ion (NOT LiPo)
• 70 × 38 × 18 mm / 96 g
• SM-4P plug
• 2-pack + 2× USB charge cables included
⚠️ Li-ion chemistry. Charge at 0.5–1C (1.5–3A). NOT LiPo. Use a Li-ion or multi-chemistry charger, or USB 5V supply. Do NOT use a dedicated LiPo smart charger.
Plug note: SM-4P plug (NOT XT60, Deans, or Molex). Verify your device and lead plug type before ordering.
Drop-in replacement: Fits most gel blaster battery bays and small RC car/boat ESCs with SM-4P connector.
Ideal for: gel blasters, gel cannons, water bullet guns, 1/24–1/10 RC cars, RC boats, casual driving.
If you need a 7.4V 3000mAh 2S Li-ion battery SM-4P that lasts through the whole battle, this is the one.
The 7.4V 3000mAh 2S Li-ion battery SM-4P from PCEONAMP – long runtime, zero fuss.
Note: Some images are AI-rendered for illustration. Actual product may vary slightly.
Frequently Asked Questions
Is this battery compatible with my gel blaster or RC vehicle?
Yes, if your device uses a 7.4V (2S) battery with an SM-4P plug and the battery bay fits 70 × 38 × 18mm. Confirm these three things before ordering: voltage (7.4V/2S), bay dimensions, and plug type (SM-4P, four-pin flat). If all three match, it will fit.
What does SM-4P mean? Is it the same as SM-2P or SM-3P?
SM-4P is a four-pin flat connector. It is NOT interchangeable with SM-2P (two-pin), SM-3P (three-pin), or other SM-series plugs — the pin count and spacing differ. Check your device’s original plug or manual to confirm it is SM-4P before ordering.
Can I charge this with a LiPo balance charger?
No. This is a Li-ion battery, not LiPo. It charges exclusively via the included USB-A cable into any 5V USB port. A LiPo balance charger will not work and may damage the pack.
How long does it take to fully charge?
Approximately 2–3 hours with a 5V/1A USB source (typical phone adapter). Slightly faster with a 5V/2A adapter. No separate battery charger needed — phone wall charger, laptop, power bank, or car USB all work.
Will this work in a high-performance RC racing car?
Not recommended. This is a Li-ion pack designed for gel blasters and toy-grade / entry-level RC vehicles. High-performance or racing vehicles typically require dedicated LiPo packs with higher sustained current ratings.
Is this suitable for children’s gel blasters or RC toys?
Yes. This battery is built for casual indoor and outdoor play, ideal for children’s gel blasters and toy-grade RC vehicles (ages 6–14). The Li-ion chemistry is inherently more stable than LiPo under normal use. Children should not open, cut, or modify the pack. If swelling, excessive heat, or damage is observed, discontinue use immediately.
How many charge cycles can I expect before capacity fades?
Under normal toy-grade use, expect 200–300 cycles before noticeable capacity drop. Store at 40–60% charge when not in use for best long-term health.
What comes in the box?
2× PCEONAMP 7.4V 3000mAh 2S Li-ion batteries (SM-4P plug), 2× USB-A charging cables, 1× user manual.