What's in This Bundle
- 6x EVE INR18650-33V, 3,200mAh, Button Top
- 1x XTAR VC4SL 4-slot LCD USB-C charger
- 1x XTAR MC1 single-slot USB-C charger
- Cables, manuals, and storage pouch included with both chargers
This bundle exists because there's no clean single charger that handles exactly 6 cells at once. Rather than force you into a mismatched combo, we've paired the 4-slot VC4SL with the compact single-slot MC1 — together they give you 5 charging slots, so 5 of your 6 cells can charge at the same time, with the last one following right behind.
This listing is for Button Top. Looking for Flat Top? Click here to buy: EVE INR18650-33V Flat Top + XTAR MC4S 4 XTAR MC1 Bundle.
Why This Pairing Makes Sense
The 33V is EVE's NCM (nickel-cobalt-manganese) mid-capacity 18650, built for applications needing a solid balance of runtime and discharge capability — e-bikes, portable power tools, AGVs, and general battery pack builds. It carries a genuine 10A continuous discharge rating alongside its 3,200mAh capacity. Six cells bought together as a matched set means consistent capacity and internal resistance across the whole group. Button Top is the terminal type required by devices with spring-loaded battery contacts.
The VC4SL handles the bulk of the charging with its LCD display and capacity-test (grading) mode — a genuinely useful way to confirm you actually have the 3,200mAh 33V rather than a mislabeled 33VA. The MC1 rounds things out as a small, genuinely portable single-slot charger — useful on its own for topping off a spare cell, throwing in a bag, or keeping in the car, not just as filler to hit a slot count.
EVE INR18650-33V — Battery Specs
| Parameter |
Value |
| Brand & Model |
EVE Energy INR18650-33V |
| Chemistry |
NCM (nickel-cobalt-manganese) |
| Capacity |
3,200mAh nominal (3,100mAh minimum) |
| Nominal Voltage |
3.6V |
| Max Charge Voltage |
4.2V |
| Standard Charge |
CC-CV, 0.5C (~1.6A), 0.02C cutoff |
| Discharge Cutoff Voltage |
2.5V |
| Max Continuous Discharge |
10A (3C) |
| AC Internal Resistance |
≤30mΩ |
| Charge Temperature |
0°C to 55°C |
| Discharge Temperature |
-20°C to 70°C (cell surface) |
| Cycle Life |
~800-1,000 cycles to 70% capacity (varies by source/test conditions) |
| Terminal Type |
Button Top |
| Protection Circuit |
None (unprotected cell) |
| Weight |
48g max |
| Cell Dimensions |
Diameter ~18.35mm, Height 65mm |
These are genuine cells verified against EVE's official datasheet, not rewrapped or relabeled stock — and specifically the 3,200mAh 33V, not the related 3,300mAh 33VA.
This listing is for Button Top. For Flat Top click here
XTAR VC4SL — Charger Specs (4 Slots)
| Parameter |
Value |
| Input |
Type-C, QC3.0 (9V⎓2A) |
| Charging Current (CC) |
3A×1 / 2A×2 / 1A×4 / 0.5A×4 / 0.25A×4 |
| Charging Method |
3-stage charging (trickle → constant current → constant voltage), 4 independently monitored slots |
| Cut-off Voltage |
4.2V ±0.05V (Li-ion) / 1.45V ±0.1V (Ni-MH/Ni-Cd) |
| Cut-off Current |
≤120mA |
| Operating Temperature |
0°C to 40°C |
| Dimensions |
L156mm x W115mm x H35mm |
| Net Weight |
212g |
| Display |
Color LCD — capacity, current, and internal resistance readouts per slot |
| Special Modes |
Capacity/grading mode, storage mode, standard charge mode |
| Compatible Cell Sizes |
10440 through 26650, flat-top 32650, plus 1.2V Ni-MH/Ni-Cd (AAA/AA/A/SC/C); supports protected 20700/21700 |
| Safety |
Reverse polarity protection ("Err" display, 0V shown), auto cut-off, multiple charge protections |
XTAR MC1 — Charger Specs (1 Slot)
| Parameter |
Value |
| Input |
Type-C, 5V⎓1A |
| Charging Current |
1A (single slot, constant current) |
| Charge Cut-off Voltage |
4.2V ±0.05V |
| Charge Cut-off Current |
<130mA |
| Operating Temperature |
0°C to 40°C |
| Dimensions |
L103mm x W25mm x H30mm |
| Net Weight |
27g |
| Charging Method |
3-stage charging (trickle → constant current → constant voltage), automatic Li-ion detection |
| Compatible Cell Sizes |
3.6V/3.7V Li-ion: 10440, 14500, 14650, 16340, 17335, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650; supports protected 21700 |
| Extra Feature |
"0V" activation technology — attempts recovery on over-discharged cells |
| Status Indicator |
Green = standby/fully charged, Red = charging, Off = reverse polarity or abnormal insertion |
| Safety |
Intelligent detection, auto cut-off, overcurrent/overcharge/overvoltage/short-circuit/reverse-polarity protection, soft-start |
| Package Includes |
MC1 charger, USB-C cable, user manual |
A realistic note on charging all 6: the 33V's own standard charge current is roughly 1.6A (0.5C), somewhat above the 1A per slot both the VC4SL and MC1 deliver — a safe, conservative rate across all 5 active slots. Expect a full charge in roughly 3.5-4 hours for those 5 cells, with the 6th following once a slot opens up.
Why the Capacity Test Mode Matters for a 6-Pack
Given the naming overlap between the 33V and the higher-capacity 33VA, buying six cells and being able to actually verify their real measured capacity is a genuinely useful check — not just a nice-to-have. The VC4SL's grading mode runs each cell through a charge-discharge-recharge cycle and reports the actual result, so you can confirm you received the 3,200mAh cell you ordered and that all six are performing consistently across two batches of four (with the MC1 handling overflow) before building them into a pack.
Where the 33V Actually Fits
-
E-bike and e-scooter packs — one of EVE's core application areas for this cell
-
AGVs, portable vacuums, and balance boards — moderate-drain equipment needing solid runtime
-
Power tool packs in parallel/series configurations
-
6S, 2S3P, 3S2P, or similar DIY pack builds where 10A per cell is sufficient
Not the right choice for sub-ohm mechanical mods, or anything regularly demanding more than 10A per cell — for those, a dedicated high-drain cell like the Samsung 25R or 30Q is a better match.
Things Worth Knowing Before You Use This Kit
-
This is an unprotected cell. Both chargers enforce their own voltage and current cutoffs, but your device still needs to handle discharge-side protection.
-
Don't mix these cells with older ones you already own, even if they're also labeled 33V. Confirm you're not mixing a 33V with a 33VA, since they're different capacity ratings despite the similar name.
-
10A is a real ceiling. Don't use these in devices that regularly demand more current than that.
-
The MC1 charges one cell at 1A — it's not meant to replace the VC4SL for bulk charging, just to round out the slot count and serve as a lightweight backup charger.
Frequently Asked Questions
Is this the 3,200mAh or 3,300mAh version? This listing is the EVE 33V, rated at 3,200mAh nominal (3,100mAh minimum) per EVE's official datasheet. The 3,300mAh cell is a related but distinct SKU marketed as the "33VA" — if you need that specific capacity, confirm with us before ordering.
Can all 6 cells charge at the same time? 5 of the 6 can charge simultaneously — 4 on the VC4SL, 1 on the MC1. The 6th cell follows once a slot frees up.
Can this charger really tell me if a cell is underperforming? Yes — the grading/capacity test mode charges, discharges, and recharges a cell while measuring the actual capacity delivered, rather than relying on the printed rating. Given the naming overlap with the 33VA, that's a genuinely useful way to confirm what you actually have.
Is this kit protected-cell compatible? Both chargers support protected 21700 cells (the VC4SL also supports protected 20700) if you use them for those later. The EVE 33V cells included in this bundle are unprotected bare cells, standard for this model.
In stock now. This bundle ships as a matched set of six genuine EVE INR18650-33V Button Top cells with a verified XTAR VC4SL and XTAR MC1 charger combo — ready for e-bike packs, power tools, and general electronics builds out of the box.
