Why This Bundle
The EVE 20P is a genuine 30A continuous discharge cell in a compact 2000mAh package — the kind of cell built for devices that need to pull hard current without the voltage falling apart. A set this size deserves a charger that can handle every cell at once while keeping tabs on their health. This bundle pairs 8 genuine EVE INR18650-20P Flat Top batteries with the XTAR VC8, an 8-bay Type-C charger with real capacity testing, internal resistance detection, and independent monitoring for every slot — ready to use straight out of the box.
EVE INR18650-20P (Flat Top) Specifications
| Item |
Spec |
| Model |
EVE INR18650-20P (Flat Top) |
| Nominal Capacity |
2000mAh |
| Nominal Voltage |
3.6V |
| Max Continuous Discharge |
30A (80°C thermal cutoff) |
| Max Charge Current |
4A (fast charge) |
| Charge Cutoff Voltage |
4.20V |
| Discharge Cutoff Voltage |
2.5V |
| Chemistry |
INR (Lithium Nickel Manganese), high-drain |
| Cell Size |
18650 (approx. Φ18.4mm × 65.0mm) |
| Terminal Type |
Flat Top — level positive terminal, suited for devices requiring full-surface contact |
| Typical Use |
Power tools, high-output flashlights, industrial equipment, high-current battery pack builds |
Note: This is a high-drain, unprotected cell — avoid mixing with batteries of a different brand, model, or charge state, and inspect the wrap for damage before every use to prevent short circuits.
The Charger: XTAR VC8
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Type-C input with QC3.0 support: up to 3A on a single bay when battery resistance is low enough
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5 adjustable current levels: 3A×1 / 2A×2 / 1A×4 / 0.5A×8 / 0.25A×8 — manually selectable to match your charging needs
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8 independent charging slots: each bay monitored and controlled separately
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Real Capacity Test (Grading Mode): on CH1–CH4, the VC8 tests true capacity through a charge–discharge–charge cycle at a stable 300mA discharge current, revealing whether a battery's stated capacity is accurate
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Storage Mode: charges or discharges batteries to their rated storage voltage to maximize battery lifespan
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Smart Battery Type Detection: automatically identifies the battery and selects the optimal charging strategy
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VA LCD Display: real-time voltage, current, mode, battery type, internal resistance, and charged capacity for every slot
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Multiple Safety Protections: over-current, overcharge, over-voltage, and short-circuit protection; automatically stops after full charge; reverse-connection and over-discharge activation for protected cells
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Built from fire-retardant PC/ABS material, with a built-in "Three-Stage Lithium Battery Charging System" (Patent No. 201720828840.6)
XTAR VC8 – Supported Battery Types & Voltage
Compatible with 3.6V/3.7V Li-ion/IMR/INR/ICR batteries, including the EVE 20P (18650) in this bundle:
10440, 14500, 14650, 16340, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650
Also compatible with 1.2V Ni-MH/Ni-Cd batteries: AAAA, AAA, AA, A, SC, C
End-of-charge voltage: 4.20±0.05V (Li-ion) / 1.45±0.1V (NiMH) · End-of-charge current: <120mA
Compatibility Notes
The VC8's slider-style contacts accommodate battery lengths from 32mm to 76mm, fitting Flat Top batteries securely without any adapter. EVE 20P Flat Top cells measure about 65.0mm, well within the VC8's compatible range. All 8 cells in this bundle can be charged simultaneously across the charger's 8 independent bays.
Note: The 20P supports fast charging up to 4A, but the VC8's per-bay currents (default 0.5A across all 8 slots, up to 3A if only 1 slot is used) are more conservative. Expect a gentler, longer charge cycle — better for long-term cell health.
What's Included
- EVE INR18650-20P Flat Top Battery × 8
- XTAR VC8 Charger × 1
- USB-A to USB-C Charging Cable × 1
- User Manual × 1
Safety Tips
- Store batteries in a proper case, keeping them away from loose metal objects to prevent short circuits
- Never disassemble, puncture, burn, or submerge the batteries
- Charge only with a genuine, compatible charger such as the XTAR VC8
- The 20P is an unprotected, high-drain cell intended strictly for compatible, purpose-built devices — do not use it in unauthorized or modified equipment
- Never discharge below 2.5V or charge above 4.2V
FAQ
Q: Can the XTAR VC8 charge EVE 20P Flat Top batteries safely? A: Yes. The VC8 automatically detects Li-ion chemistry and applies the correct charging voltage (4.2V) and current for 20P cells, with independent monitoring on each of its 8 slots.
Q: Can I charge all 8 batteries at the same time? A: Yes. The VC8 has 8 independent slots. At the default automatic setting, all 8 can charge simultaneously at up to 0.5A per slot; manually selecting a higher current level will use fewer slots at once (e.g., 3A on 1 slot, 2A on 2 slots, or 1A on 4 slots).
Q: Will Flat Top batteries sit properly in the VC8 charger slots? A: Yes. The VC8's slider-style contacts are designed to accommodate both Flat Top and Button Top cells without any adapter or modification.
Q: How do I test if a 20P battery has lost capacity? A: Use the VC8's Grading Mode on CH1–CH4. It runs a charge–discharge–charge cycle to measure true capacity, so you can identify batteries that no longer meet their rated mAh.
Q: Is 30A continuous discharge safe for everyday devices? A: No — the 20P is a high-drain cell intended strictly for devices specifically engineered for high continuous discharge, such as certain power tools and high-output flashlights. Always check your device's battery requirements before use.
Q: Does the VC8 require a special power adapter for fast charging? A: For the fastest speeds (2A/3A settings), a QC3.0-compatible USB-C adapter is required. Without QC3.0, charging current will be limited.
Q: How does the 20P compare to other 2000mAh-class high-drain cells like the Samsung 20S? A: Both land in similar territory — 2000mAh capacity paired with a 30A discharge rating — making them comparable choices for devices that need strong current output without a lot of bulk.
Q: What's in the box? A: 8 EVE INR18650-20P Flat Top batteries, 1 XTAR VC8 charger, a USB-A to USB-C charging cable, and a user manual.
