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Klarus C8 Charger - 8 bay - For use with Li-ion, NiMH, NiCd Batteries

Klarus C8 charger front view
Klarus C8 charger left side angle
Back view of Klarus C8 charger
Right side angle of Klarus C8 charger
Klarus C8 charger with accessories
Packaging for Klarus C8 charger
Klarus C8 charger with batteries inserted
Klarus C8 charger with batteries inserted laying down
Slide one for Klarus C8 charger
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Klarus C8 charger front view
Klarus C8 charger left side angle
Back view of Klarus C8 charger
Right side angle of Klarus C8 charger
Klarus C8 charger with accessories
Packaging for Klarus C8 charger
Klarus C8 charger with batteries inserted
Klarus C8 charger with batteries inserted laying down
Slide one for Klarus C8 charger
Slide two for Klarus C8 charger
Slide three for Klarus C8
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  • For all your charging needs, this can accept Li-Ion, NiMh and NiCd batteries even including 18650 and 16340 sizes.
  • 8 individual charging bays capable of detecting voltage and capacity of correctly inserted batteries, and never over-charges.
  • Individual LED charge indicator lights allows you to see real-time charging statuses on each port.
  • Safe to use in any city power grid, worldwide even with varying charging voltage from AC or DC input.
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Klarus C8

Charge ALL of the batteries

For users in need of serious bulk charging power, the Klarus C8 has what it takes with 8 individual charging ports and the ability to charge all of the most popular rechargeable battery models. The C8 can power up a wide range of Li-Ion, NiMh and NiCd chemistry batteries including 18650 and 16340 sizes. The C8 is a smart charger that detects the voltage and capacity of inserted batteries and charges them accordingly, assuring that no over-charging occurs. Each charging port features an individualized LED charging indicator that lets you know when a battery is charging and when it is ready for use. With its large battery capacity and lightweight portability, the C8 is a great choice for people who are on the go and need to take their energy solutions with them!

  • Microcomputer control system allows each of the two battery slots to charge individually
  • Capable of charging 2 batteries simultaneously (Ni-MH/Ni-Cd/ 3.7V Li-ion)
  • The LEDs will clearly display the charging progress of each battery
  • Charging voltage is from AC100V to 240V or DC12V, safe to use on all power grids in cities worldwide
  • -dV/dt Control technology to charge Ni-MH and Ni-Cd batteries more fully
  • Built-in reverse polarity and short-circuit protection
  • Features over-charge protection to prevent battery damage. Automatically stops charging when complete
  • Auto-activation function:
    • Automatically reactivates "zero voltage" short-circuit protected Li-ion batteries that have been completely drained of power
    • Three corresponding indicator lights will flash simultaneously when attempting to charge a battery that cannot be reactivated
  • Made from durable ABS (fire retardant/flame resistant) for your safety
  • Designed for optimal heat dissipation, long lifespan
  • Please Note: All bays are capable of charging simultaneously, but you may be limited in charging eight C-sized, or larger, batteries simultaneously due to the large size of the cells.

  • Input Voltage: AC 110-240V 50/60Hz DC 12V 1A
  • Output Voltage / Current:
    • 4.2V±1%V, 1.48V ±1%V, 650mA x 8
  • Compatible with:
    • Li-ion: 26650 22650 18650 18490 17670 17500 16340 14500 10440
    • Ni-MH, Ni-Cd: AA AAA AAAA C
  • Size: 215mm x 132mm x 40mm
  • Weight: charger weight 278g, adapter weight 182g
  • Optimal working environment: 5%(0°C)-90%(35°C) (fully-laden regular activity)
  • Storage temperature: 0°C-40°C
  • Product Certifications: RoHs, CE
Charge Channels:8
Supported Chemistries:Li-Ion, Ni-Cd, Ni-MH
Compatible Battery Sizes:10440, 14500, 16340 / RCR123A, 17500, 17670, 18490, 18650, 22650, 26650
Charge Current:650mA
Batteries Included:No
Warranty:Battery Junction 30-Day Warranty, Klarus 1 Year Warranty
Return Policy:Battery Junction Return Policy
Product Weight:9.80616oz
Product Dimensions:8.46457" (L) x 5.19685" (W) x 1.5748" (H)
Country of Origin:CN
8 Reviews
25% (2)
38% (3)
13% (1)
13% (1)
13% (1)
By Richard
Camarillo, CA
Batteries need adjustment to charge
July 31, 2019
This product is just ok. You have to adjust the C size batteries in the slot otherwise it don't work. I have not tried other size batteries yet because I have other chargers for AA and AAA batteries. I love the 8 slots for charging C Size but I don't know yet if adjusting the batteries is worth the trouble. The Plus terminal doesn't seem to be long enough (Not Likely) or the plastics get in the way (Probably). I do not intend to send it back but some modification may be necessary. I gave it 2 stars because I really bought it for C size only.
By Ellie
over heats batteries
July 11, 2019
Upon receiving this device, I placed in AAA batteries to charge. They rolled or did not fit securely in the slots/spring loaded areas very well. The lights are only red, start out in the 1 blinking position and move up until all are solid. Once this occurred on a battery, I reached to take it off. It was burning hot. It took about 3-4 hours to charge, and I kept a constant eye on them. I would not feel comfortable leaving this to charge unattended like I do my 8 slot Tenergy TN145 AA/AAA charger.
This charger may do larger batteries, but the smaller ones don't fit securely & batteries are extremely hot.
By batteryguy
versatile charger but not functional
July 10, 2019
At first glance, this is a very versatile charger with nice capacity. The moment I started using this charger I noticed the batteries I was charging all started to overheat to the point they were hot to the touch. I would not recommend this charger because it will probably ruin your batteries.
By Glenn
Northern Virgina
Nice Charger, Great Price
January 23, 2018
I'm giving this review five stars, but be aware that I've only had the charger for one day. I like that each battery charges independently and have their own status LEDs. I also like the integrated USB charge port.

There was mention in other reviews that suggest this charger should be able to work within a car and I believe those reviewers are mistaken. Klarus does not supply an automotive adaper cable, even as an optional accessory. It is true that the charging unit itself uses an input voltage of "12VDC at 3.5 amp". The unit's power supply provides that output from 120-240VAC 50/60Hz and has a removable US 120V plug cable. One could use a european AC cable (not provided).

Note that autos do not actually provide "12vdc", they provide 13.8vdc when the alternator is running and 12v from the battery when the engine is off. 1.8 volts is a significant difference, almost 15%. A 12 volt-regulated at 3.5 amp from 15vdc, or 120v inverter would be needed to run this in a car or damage to the internal charging circuitry might result.
In reality, a 2 cell or 4 cell charger would be more useful in a car...

Other comments were made about some minor difficulty aligning the batteries to the charger electrical contacts. Now that I have the charger, I understand this issue. The cradles are sized (naturally) for large-diameter "C" cell batteries - the biggest (physically) battery that can be charged, so smaller diameter (18650 & 16340) batteries do not fit snugly. Also, positive contacts have a rather severely pointed contact shape that mates with the battery's small '+' contact. The pointed contact is designed to make an excellent electrical connection, even with batteries that might be a little bit corroded from use 'in the wild'. It's not a problem in the least and you have the status LEDs as another indicator of correct installation.

I plan to get at least one more of these, and a 4 cell unit to use in the car.
ProsExcellent design - I'm very impressed with the thought, experience and engineering that obviously goes in to Klarus products.
ConsI want more... (Those of you who get adicted to cool kit will understand.)
By Jeff
Big Rapids, MI
Battery charger
October 31, 2017
Purchased for my scout troop. This charger works well and charges both 18650 and Ni-MH cells. It came with an AC adapter but literature indicated that it can be connected to a 12VDC source and it did not come with an adapter for that connection. I have not tried to charge Ni-Cd cells so I have no information on that type of battery. The Ni-MH AA cells that I charge took a little fiddling to get the positive post on the cells to make connection with the charger but they charged after that. The NI-MH cells were quite hot after charge was complete, (this may be normal), but the cells worked after charge.
ProsCharges most types of rechargeable batteries Monitors each battery under charge individually
ConsDoes not have a 12VDC adapter
1 Question & 1 Answer
Jeff Jones
from Tampa,FL asked:
August 16, 2015
Will this charger work for this type of battery that is unprotected and will stop the charging when battery is full. Efest IMR 14500 700mAh 3.7V Unprotected Lithium Ion (Li-ion) Button Top Battery
1 Answer
Thank you for your inquiry. The Klarus C8 is a smart charger, so it is a great choice to use with the IMR cells. The C8 has a trickle charge mode to prevent overcharging the unprotected cells.
Customer Service
on August 18, 2015

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