What's in This Bundle
- 6x Samsung INR18650-30Q, 3000mAh, Flat 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. It's a practical way to cover a 6-cell purchase without buying two full 4-slot units or leaving cells waiting around unnecessarily.
This listing is for Flat Top. Looking for Button Top? Click here to buy: Samsung 30Q Button Top + XTAR VC4SL+XTAR MC1 Bundle.
Why This Pairing Makes Sense
Six 30Qs bought as a matched set means consistent capacity and internal resistance across the whole group — genuinely useful if you're running these in series/parallel packs or just want six cells that behave the same way in a device. Flat Top is the standard terminal type for most current devices — DIY packs, tool battery builds, and equipment that doesn't rely on spring-loaded contacts.
The VC4SL handles the bulk of the charging with its LCD display and capacity-test (grading) mode, so you can verify all six cells' real performance in batches of four. 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.
Samsung 30Q — Battery Specs
| Parameter |
Value |
| Brand & Model |
Samsung SDI INR18650-30Q |
| Capacity |
3,000mAh (minimum ~2,900mAh) |
| Nominal Voltage |
3.6V |
| Full Charge Voltage |
4.2V |
| Discharge Cutoff Voltage |
2.5V |
| Max Continuous Discharge |
15A |
| Terminal Type |
Flat Top |
| Protection Circuit |
None (unprotected cell) |
| Weight |
~45-48g per cell |
These are genuine cells verified against Samsung's official datasheet, not rewrapped or relabeled stock.
This listing is for Flat Top. For Button 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 |
3.6V/3.7V Li-ion: 10440, 14500, 14650, 16340, 17335, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650, flat-top 32650. 1.2V Ni-MH/Ni-Cd: AAA, AA, A, SC, C. Supports protected 20700/21700 cells; spring-loaded slots can also fit two 32650s and two 18650s at once |
| 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: with the VC4SL running 4 cells at once (1A per slot with the QC3.0 adapter active) and the MC1 running a 5th at 1A, you can have 5 of your 6 cells charging simultaneously in roughly 3.5-4 hours. The 6th cell either waits for a slot to open up or gets its turn on the MC1 afterward — this bundle covers 6 cells efficiently, but it's not a "6 cells, all at once" solution, and we'd rather tell you that plainly than let the slot count imply otherwise.
Where This Bundle Actually Fits
-
6-cell devices and packs — larger flashlights, lanterns, or DIY builds using six cells in series/parallel
-
Anyone building up a working set of spares — six matched cells gives you real flexibility across multiple devices
-
Builds where per-cell verification matters — the VC4SL's grading mode lets you check all six cells' actual capacity in two batches of four (plus the fifth via MC1) before committing them to a pack
Things Worth Knowing Before You Use This Kit
-
The 30Q 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 30Q — run them through the VC4SL's grading mode first if you want to check consistency.
-
Flat Top won't work in devices that specifically require Button Top cells — check your device's battery compartment before ordering if you're not sure which terminal type it needs.
-
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
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. This bundle is built to efficiently cover 6 cells, not to charge all 6 in parallel at once.
Why include the MC1 instead of just selling 6 cells with only the VC4SL? Without a second charger, you'd be left manually rotating 2 cells through the VC4SL's 4 slots. The MC1 fills that gap with a genuinely useful, portable charger you'll likely find uses for beyond this bundle.
Will Flat Top cells work in my device? If your device uses spring-loaded, flat, or magnetic-style contacts without a raised positive terminal requirement, Flat Top is the correct choice. If your device specifically calls for Button Top (a raised positive terminal), you'll want that version instead.
Can this charger tell me if a cell is underperforming? Yes — the VC4SL's grading mode charges, discharges, and recharges a cell while measuring actual delivered capacity, rather than relying on the printed rating.
What does the MC1's "0V activation" feature do? It lets the charger attempt a slow, controlled charge on a cell drained deep enough that a standard charger would refuse to recognize it. It won't save every over-discharged cell, but it can recover some that would otherwise be written off.
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 Samsung 30Q 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 Samsung 30Q Flat Top cells with a verified XTAR VC4SL and XTAR MC1 charger combo — enough charging capacity to keep all six cells moving without waiting around.
