Round cell charger index (USB power input)

Index of reviewed round cell chargers (USB power input)

Select index: All NiMH only LiIon only Universal Analyzer Display V & mAh USB output USB power input 12V power input Mains power input Min. 4 slots 1A Min. 6 slots NiMH C & D

Charger name	Slots	Battery length	Battery Diameter	Max. current all slots	Max. single slot current	Min. single slot current	Chemistry	Power	Extra	Year
Xtar PB2C	2	64-70	18-19	1	2	2	LiIon 4.2V	USB	Power Bank	2020
Xtar X2	2	32-77	10-26	1	2	0.5	NiMH, LiIon 4.2V	USB, Mains	V, mAh	2020
Xtar MC4S	4 (2)	32-72	10-26	0.5	1	1	NiMH, LiIon 4.2V	USB		2020
Ravpower RP-BC015	4	44-50	10-14	0.5	2	1	NiMH	USB		2020
Hohm Tech School4	4 (2)	32-76	10-26	1	2	0.5	LiIon 4.2V	USB		2020
Xtar VC8	8 (4)	32-76	10-26	0.5	3	0.25	NiMH, LiIon 4.2V	USB, QC	V, mAh, Analyzer, IR, Store	2020
Hohm Tech School2	2	32-76	10-26	1	1	0.5	LiIon 4.2V	USB		2020
Xtar X4	4 (2)	31-72	10-26	1	2	0.5	NiMH, LiIon 4.2V	USB, Mains	V, mAh, Power Bank	2020
EBL iQuick 2-USB charger	4	44-50	10-14	0.9	3.6	3.6	NiMH	USB		2020
Vapcell U2	2	34-77	10-26	1	2	0.5	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB	Power Bank	2020
USB LiIon Charger BH-042100-02U	2	31-69	10-26	0.6	0.6	0.6	LiIon 4.2V	USB		2019
Yonli Q1	1	33-75	10-26	2	2	0.5	NiMH, LiIon 4.2V	USB		2019
Fenix ARE-D1	1	30-77	26-10	1.2	1.2	0.5	NiMH, LiIon 4.2V, LiFePO4	USB	V, mAh, Power Bank	2019
Golisi i4	4 (2)	32-70	10-26	0.5	2	1	NiMH, LiIon 4.2V	USB	V, mAh	2019
GH Power Charger XY-186BS	1	63-68	16-18	1	1	1	LiIon 4.2V	USB		2019
Leise NiMH 4 slots LS-U401A	4	44-50	10-14	0.5	2	2	NiMH	USB		2019
Xtar PB2S Charger & power bank	2	63-71	16-21	2.5	2.5	2.5	LiIon 4.2V	USB, QC	V, Power Bank	2019
Basen BO-4	4 (2)	28-70	10-26	0.5	2	0.5	LiIon 4.2V	USB		2019
Basen BO-2	2	28-70	10-26	1	2	0.5	LiIon 4.2V	USB		2019
The minimum charger	1	35-70	18-18	1.8	1.8	1.8		USB	Power Bank, USB charger	2019
LiitoKala Lii-S2	2	32-71	10-26	1	2	0.5	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB	V, mAh	2019
Xtar VP4C	4 (2)	31-71	10-32	0.5	1	0.25	LiIon 4.2V	USB	V	2019
Xtar VC4S	4 (2)	30-70	10-32	1	3	0.5	NiMH, LiIon 4.2V	USB, QC	mAh, Analyzer, IR, Store	2019
ISDT N8	8	44-50	10-14	0.8	1	0.1	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB, QC	V, mAh, Analyzer, IR	2019
Golisi L2 Compact Mini Charger	2	33-71	10-26	1	2	0.5	NiMH, LiIon 4.2V	USB		2019
Eizfan NC2 USB Charger	2	32-74	10-26	1	1	1	LiIon 4.2V	USB		2019
Fenix ARE-X11 Charger & power bank	1	62-70	18-18	1	1	1	LiIon 4.2V	USB	Power Bank, USB charger	2019
Eizfan NC1 USB Charger	1	33-76	10-26	0.8	0.8	0.8	LiIon 4.2V	USB		2019
Eizfan C2 USB Charger	2	31-71	10-26	1	1	0.5	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB	Power Bank	2019
Eizfan C1 USB Charger	1	30-70	10-26	1	1	0.5	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB	Power Bank	2019
NiteCore LC10	1 (1)	1-99	1-99	1	1	1	LiIon 4.2V	USB, Mains, Mains adapter included	Power Bank	2019
Allmaybe TC2	2	33-70	10-32	1	2	0.5	NiMH, LiIon 4.2V	USB	V, mAh, Analyzer, Power Bank	2019
NiteCore UMS4	4 (2)	29-77	10-32	1	3	0.3	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB, QC	V, mAh, IR	2019
NiteCore UM4	4 (2)	30-79	10-32	1	1.5	0.3	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB, QC	V, mAh, IR	2019
NiteCore UMS2	2	30-79	10-32	3	3	0.1	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB, QC	V, mAh, IR	2019
NiteCore UM2	2	30-79	10-32	1.5	1.5	0.1	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB, QC	V, mAh	2019
Golisi Needle 2	2 (1)	33-71	10-32	0.5	0.5	0.5	LiIon 4.2V	USB		2018
Golisi Needle 1	1	34-71	10-32	0.5	0.5	0.5	LiIon 4.2V	USB		2018
Xtar SC2	2 (1)	52-76	16-26	2	3	2	LiIon 4.2V	USB, QC		2018
Xtar VC2S	2	30-70	10-26	1	2	0.4	NiMH, LiIon 4.2V	USB	V, mAh, Power Bank, USB charger, IR	2018
Woyum ZK1a	1	33-77	10-26	1	1	1	NiMH, LiIon 4.2V	USB		2018
Folomov Key Charger	1	30-75	18-21	2	2	2	LiIon 4.2V	USB	Power Bank	2018
ISDT A4	4	44-50	10-14	0.25	1	0.5	NiMH, LiIon 4.2V, LiFePO4	USB		2018
Woyum ZK6	6	44-50	10-14	0.5	1	0.3	NiMH	USB	V, mAh	2018
Doublepow DP-U03	3	44-50	10-14	0.1	0.1	0.1	NiMH	USB		2018
Leise NiMH 2 slots LS-U2C	2	44-50	10-14	0.25	0.25	0.1	NiMH	USB		2018
Basen BO-1	1	28-70	10-26	2	2	0.5	LiIon 4.2V	USB		2018
Xtar PB2	2	64-66	18-18	1	2	2	LiIon 4.2V	USB	Power Bank, USB charger	2018
NicJoy A03 Dual	2 (2)	33-70	10-26	1	1	0.5	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB	Power Bank	2018
GP Recyko+ Pro U411	2	44-50	10-14	0.25	0.25	0.1	NiMH	USB		2018
LiitoKala Lii-S1	1	33-70	10-26	1	1	0.5	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB	V	2018
LiitoKala Lii-402	4 (2)	33-70	10-26	0.5	2	0.5	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB	USB charger	2018
NiteCore F2	2	29-71	10-32	1	1	0.5	LiIon 4.2V	USB	Power Bank	2018
Golisi i2	2	31-71	10-26	1	2	1	NiMH, LiIon 4.2V	USB	V, mAh	2018
Golisi i1	1	32-71	10-26	2	2	0.5	NiMH, LiIon 4.2V	USB	V, mAh	2018
PortaPow AA+AAA usb battery charger	4	44-50	10-14	0.3	0.75	0.75	NiMH	USB		2017
Folomov A1	1 (1)	30-150	10-50	1.2	1.2	1.2	LiIon 4.2V	USB	Power Bank, USB charger	2017
Efest PRO C1 Charger 2017	1	30-70	10-26	1	1	1	LiIon 4.2V	USB		2017
Soshine T2	2 (2)	31-71	10-26	0.4	0.8	0.8	NiMH, LiIon 4.2V, LiFePO4	USB, Mains adapter included	V, mAh	2017
Hexinyu HXY-H1	1	35-70	10-26	1	1	0.5	NiMH, LiIon 4.2V	USB	V	2017
Xtar MC4	4 (2)	31-71	16-26	0.5	1	0.5	LiIon 4.2V	USB		2017
Fenix ARE-X1+	1	33-69	10-26	1	1	1	NiMH, LiIon 4.2V	USB	V	2017
Klarus K1 Smart Charger	1	32-73	10-26	1	1	0.5	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB		2017
Allmaybe EC2	2	33-70	10-26	1	1	0.5	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB	Power Bank	2017
Olight UC	1	1-99	10-99	0.8	0.8	0.8	NiMH, LiIon 4.2V	USB		2017
Xtar MC6 Queen Ant	6 (2)	30-72	10-26	0.5	1	0.5	LiIon 4.2V	2xUSB		2016
LiitoKala Lii-202	2	33-70	10-26	1	1	0.5	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB	Power Bank	2016
Miller ML-106 V1.0	1	16-69	16-26	1.6	1.6	1.6	LiIon 4.2V	USB	Power Bank	2016
NiteCore F1	1	29-71	10-26	1	1	0.5	LiIon 4.2V	USB	Power Bank, USB charger	2016
Xtar ANT - MC1Plus	1	31-71	10-26	1	1	0.5	LiIon 4.2V	USB		2016
Xiaomi ZI5 PB400	4	44-50	10-14	0.5	1.2	0.3	NiMH	USB	Power Bank	2016
Fenix ARE-X1	1	65-71	16-26	1	1	1	LiIon 4.2V	USB	Power Bank, USB charger	2016
Ikea Vinninge 403.036.32	2	44-50	10-14	0.2	0.2	0.1	NiMH	USB		2016
Opus BT-C100	1	33-73	10-32	1.6	2	0.2	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB, 12V, Mains adapter included	V, mAh, Analyzer, Power Bank, USB charger, IR	2016
Keeppower L1 4.20V	1	29-71	16-26	1	1	0.5	LiIon 4.2V	USB	V	2016
Keeppower L2	2	30-70	10-26	1	1	0.5	LiIon 4.2V	USB, Mains adapter included	V	2016
LiitoKala Lii-100	1	33-70	10-32	1	1	0.5	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB	Power Bank	2016
Skilhunt M1	1	33-70	10-32	1	1	0.5	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB	Power Bank	2016
Thrunite U1	1	31-69	10-26	1	1	1	NiMH, LiIon 4.2V	USB		2015
ML-102 V9.0 2015	1	65-65	16-18	1.6	1.6	1.6	LiIon 4.2V	USB	Power Bank, USB charger	2015
Xtar VC2 Plus Master	2	31-71	10-26	1	1	0.5	NiMH, LiIon 4.2V	USB	Power Bank, USB charger	2015
Tomo V6-2	2	30-67	10-18	0.5	0.5	0.5	NiMH, LiIon 4.2V	USB		2015
Miller ML105 V1.0	1	64-69	16-26	1.3	1.3	1.3	LiIon 4.2V	USB		2015
Nokoser DigiCharge D2S	2	31-71	10-26	0.5	0.5	0.5	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB, Mains	V, mAh	2015
Nokoser DigiCharge D4u	4 (2)	30-71	10-26	0.5	1	0.5	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB, Mains adapter included	V, mAh, Power Bank	2015
Klarus CH4s	4 (2)	30-71	10-26	0.5	1	0.5	NiMH, LiIon 4.2V, LiIon 4.35V, LiFePO4	USB, Mains	V, mAh	2015
Micro 18650 Battery USB	1	65-70	16-18	0.8	0.8	0.8	LiIon 4.2V	USB		2015
GoalZero Guide10Plus	4	44-50	10-14	0.5	0.5	0.5	NiMH	USB, other	Power Bank	2015
ML-102 V8.0 2015	1	65-65	16-18	1.3	1.3	1.3	LiIon 4.2V	USB	Power Bank, USB charger	2015
Soshine SC-C5 NiMH + LiFePO4	4	44-50	10-14	0.3	0.5	0.25	NiMH, LiFePO4	USB, 12V, Mains adapter included		2015
Xtar MC1Plus	1	30-71	10-26	1	1	0.5	LiIon 4.2V	USB		2015
Klarus CH1	1	31-69	10-26	1	1	1	NiMH, LiIon 4.2V	USB, 12V	Power Bank	2015
USB AA-AAA	2	44-50	10-14	0.17	0.17	0.17	NiMH	USB		2015
Xtar VC4	4 (2)	30-71	10-32	0.5	1	0.5	NiMH, LiIon 4.2V	USB, other	V, mAh	2015
Danae DUO 9000	2	44-50	10-14	0.35	0.4	0.4	NiMH	USB, 12V, other, Mains adapter included	Power Bank	2015
Panasonic BQ-CC14	2	44-50	10-14	0.4	0.8	0.4	NiMH	USB		2015
ML-102 V7.1 2015	1	65-65	16-18	1.2	1.2	1.2	LiIon 4.2V	USB	Power Bank, USB charger	2015
NiteCore UM10	1	30-69	10-18	0.8	0.8	0.4	LiIon 4.2V	USB	USB charger	2015
NiteCore UM20	2	30-69	10-18	1	1	0.5	LiIon 4.2V	USB	USB charger	2015
Xtar VC2	2	30-71	14-26	0.5	0.5	0.5	LiIon 4.2V	USB	V, mAh	2014
Xtar MC2	2 (1)	31-71	10-26	0.5	0.5	0.5	LiIon 4.2V	USB, Mains adapter included		2014
Xtar MC1	1	31-72	14-26	0.5	0.5	0.5	LiIon 4.2V	USB		2014
Soshine H2 V2	2	31-72	10-26	0.8	0.8	0.8	NiMH, LiIon 4.2V, LiFePO4	USB, 12V, Mains adapter included	V, mAh, 9V charger, 9V LiIon	2014
Efest Xsmart	1	31-72	14-18	1	1	1	LiIon 4.2V	USB, 12V	Power Bank	2014
Xtar MC0	1	31-52	10-18	0.5	0.5	0.25	LiIon 4.2V	USB		2014
Efest Xblack	1	31-71	14-18	1	1	1	LiIon 4.2V	USB, 12V, Mains adapter included		2013
Soshine H2	2	31-72	10-26	0.8	0.8	0.8	NiMH, LiIon 4.2V, LiFePO4	USB, 12V, Mains adapter included	V, mAh	2013
Xtar XP1	1	31-52	10-18	0.5	0.5	0.25	NiMH, LiIon 4.2V	USB		2013
CottonPickers Basic 100mA	1	1-99	5-99	0.1	0.1	0.1	LiIon 4.2V	USB		2013
Soshine SC-S7	1	26-70	10-18	0.8	0.8	0.8	NiMH, LiIon 4.2V	USB, 12V, Mains adapter included	V, mAh	2012
Xtar MP2	2	34-34	14-18	0.25	0.25	0.25	LiIon 4.2V, LiFePO4	USB		2011

Columns

Slots: Number of charger slots in the charger, a second number will specify the number of slots that can handle the maximum battery size.
Battery length: Minimum and maximum length of battery. See note about typical NiMH chargers.
Battery diameter: Minimum and maximum diameter of battery, the min size is the smallest cell that will usual be used in the charger. Not all slots may take the maximum diameter.
Max. current all slots: Maximum slot current with all slots filled
Max. single slot current: Maximum current with one battery in the charger (Two for a few NiMH chargers). If the digits are red the charger cannot charge a single cell.
Min. single slot current: Minimum current with a single battery in the charger. For chargers with adjustable current this will be different from max..
Chemistry: What chemistries the charger supports.
- NiMH: The common AA/AAA rechargeable batteries, sometimes also C and D cells
- LiIon 4.2V: The common 3.6V/3.7V LiIon cells with a 4.2V charging voltage.
- LiFePO4: 3V/3.2V LiIon cells with a 3.6V charging voltage.
- LiIon 4.35V: Some brands of LiIon cells must be charged with a higher voltage to reach maximum capacity.
Power: How the charger is powered.
- USB: The charger can be powered from usb, either directly or with a supplied cable. A 5V input will not qualify as USB.
- QC: The charger can use Quick Charge 2.0 or 3.0, this means more power and faster charging.
- 12V: The charger can be powered form 12V, this usual means it can be used with a car adapter.
- Mains: The charger has a main input socket.
- Other: Any other power options than the above will be listed as other.
- Mains adapter included: Chargers without mains and usb input usual includes a mains adapter, but not always.
Extra: Other functions the charger can do besides charging.
- V: Charger display voltage
- mAh: Charger displays how many mAh that is filled into the battery
- IR: Measure internal resistance, check the review for how good it is.
- USB charger: It has a usb output powered from its power input.
- Power bank: It has a usb output powered from batteries.
- Analyzer: Is has a discharge function that can measure the capacity (mAh) or batteries.
- Bluetooth: Charger has build in bluetooth and can be used with a smartphone app.
- PC: Charger can be connected to a PC for data readout and/or control.
- 9V charger: Charger can charge one or more 9V batteries.
- User calibration: The user can calibrate the charger.
- External pack charging: The charger can charge some LiIon packs
- EGO charger: Charger has a connection for this type of ecig batteries.
- Store: The charger can charge/discharge LiIon batteries to a half charged state for best long time storage.
Max. discharge current: How high current an analyzer can discharge with, this is only shown when analyzer index is selected.
USB out current: Output current on usb connector, this is only shown when usb output index is selected.
Solar: Charger is suitable for use with 5V solar panels without a buffer battery, this is only shown on the "USB power input" list. I started testing this late 2018.
Rating: How I rate the charger, see below.
Year: The year I published the review, this will not always match the year the charger was put on the market.

Ratings

My ratings will not always match the one in the review, this is because I can only use a single rating here, without any comments.

	Bad, this means completey hopeless. Any charger that significantly overcharge LiIon or fail the safety checks will get this rating
	Usable, the charger works, but there are some serious problems
	Acceptable, the charger do a decent job
	Fairly good, there is a few hassles
	Good, everything basically works as it is supposed to
	Very good, just about perfect
	Something is good, something not, check the review
	No rating

Notes

For a typical NiMH charger the min. current will be for a AAA cell and the two other currents will be for AA cells. Red numbers in the current fields means the slots works in pairs. The size specifications will always be 50-44 and 14-10 (AA is 50x14 and AAA is 44x10). Timer based chargers will always get a low rating

With reviews from 2013 and before battery length may be estimated, not measured.