What's in This Bundle
- 6x Panasonic NCR18650BD, 3,200mAh, 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.
This listing is for Flat Top. Looking for Button Top? Click here to buy: Panasonic NCR18650BD Button Top + XTAR VC4SL 4 + XTAR MC1 Bundle.
Why This Pairing Makes Sense
The NCR18650BD is Panasonic's mid-drain follow-up to the NCR18650B — very similar capacity, but a genuinely higher discharge ceiling (10A continuous versus the B's 4.875A). That makes it a better fit for devices that need more than trickle-level current but don't require the extreme discharge rates of dedicated high-drain cells like the Samsung 25R or 30Q. Six cells bought together as a matched set means consistent capacity and internal resistance across the whole group. 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.
Panasonic NCR18650BD — Battery Specs
| Parameter |
Value |
| Brand & Model |
Panasonic NCR18650BD |
| Capacity |
3,200mAh nominal (3,180mAh typical, 3,030-3,080mAh minimum depending on test conditions) |
| Nominal Voltage |
3.6V |
| Charge Voltage |
4.20V ±0.05V |
| Standard Charge Current |
0.909A (0.3C) |
| Max Charge Current |
1.5A |
| Charge Cutoff Current |
60.6mA (0.02C) |
| Discharge Cutoff Voltage |
2.5V |
| Max Continuous Discharge |
10A (3C) |
| AC Impedance |
≤35mΩ (1kHz) |
| Charge Temperature |
+10°C to +40°C |
| Discharge Temperature |
-20°C to +60°C |
| Cycle Life |
500+ cycles |
| Terminal Type |
Flat Top |
| Protection Circuit |
None (unprotected cell) |
| Weight |
49.5g max |
| Cell Dimensions |
~18.5mm x 65.1mm |
This cell's specs are well-documented and consistent across independent lab testing and Panasonic's own datasheet — no meaningful discrepancy between sources on its 10A discharge rating, unlike some cells in this category. These are genuine cells verified against that documentation, 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 |
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: both the VC4SL (1A per slot with all 4 bays occupied) and the MC1 (1A) sit comfortably between this cell's standard (0.909A) and max (1.5A) charge current specs — a sensible, safe 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
Buying six cells at once is exactly the scenario where verifying consistency pays off, even for a well-documented cell like this one. The VC4SL's grading mode runs each cell through a charge-discharge-recharge cycle and reports its actual measured capacity — so instead of just trusting that all six cells hit their rated ~3,180mAh, you can check for yourself across two batches of four (with the MC1 handling overflow) before building them into a series or parallel pack.
Where This Bundle Actually Fits
-
Flashlights running moderate-to-high output modes — enough current headroom for more than just low modes
-
Portable fans, radios, and remote controls that draw more than trickle current
-
Power tool and e-bike packs where 10A per cell in parallel configurations is sufficient
-
6S, 2S3P, 3S2P, or similar DIY pack configurations needing a step up in discharge capability over pure energy-focused cells like the NCR18650B
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 NCR18650BD — that's exactly what the grading mode is for, if you want to check compatibility before combining batches.
-
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.
-
10A is a real ceiling, not a conservative underrating. Pushing this cell toward higher current than it's rated for will cause excess heat and accelerated wear.
-
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.
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.
How is the BD different from the standard NCR18650B? Capacity is similar (3,200mAh for the BD versus 3,400mAh for the B), but the BD has a meaningfully higher discharge ceiling — 10A continuous versus 4.875A for the standard B. If your device needs more current than the B can deliver but doesn't need a dedicated high-drain cell, the BD is the middle-ground option.
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.
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 Panasonic NCR18650BD 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 Panasonic NCR18650BD Flat Top cells with a verified XTAR VC4SL and XTAR MC1 charger combo — ready for moderate-drain flashlights, tools, and general electronics out of the box.
