Charge until all of the bars (in display window) are continuously lit up and the "in" volt should read about 5 volts but more importantly the "in" current will read zero. The amount of time it takes to reach the fully charged state varies drastically depending on the charger you use and also the capacity of lipo batteries that are used. Mine takes a couple of hours to charge and I am using 4x 2000mah lipo batteries with a USB 2.0 2 amp basic wall charger. Hope this helps.

Will this also charge Cr 123a if you stack 2 together

No it will not fit. Only 18650!

Does it charge the batteries independently? If I replace one full battery with a dead one, will it charge just the one dead battery?

Yes, and you can see how full each battery is

Can this use a solar panel to charge?

I dont see why it wouldn't work with solar charging

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LIJIANI 18650 Power Bank Case Portable DIY Battery Pack | LCD display of capacity, reverse installation detection, overcharge protection.

Product ID: 369095658

Details

Battery Capacity
10000 Amp
Brand
LIJIANI
Color
case
Connector Type
Micro USB USB
Special Feature
Digital Fast

⚡Dual USB & Type-C fast output

💡LCD voltage & power display

🔋4-battery capacity

$44.32

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Description

🔌 Power your DIY lifestyle with smart, speedy charging!

CHARGE FOUR GO MORE - Compact design charges up to 4 x 18650 Li-ion batteries simultaneously.
FLASHLIGHT ON DEMAND - Long-press switch activates built-in flashlight—perfect for on-the-go emergencies.
SAFETY FIRST ALWAYS - Bad battery detection prevents damage by alerting you to faulty or reversed cells.
DUAL PORT FAST CHARGING - USB & Type-C outputs deliver 5V/2A for rapid device and battery charging.
POWER UP WITH PRECISION - Smart LCD shows real-time voltage, current & battery life for total control.

The LIJIANI M09 is a portable, smart charger designed for 3.7V 18650 Li-ion batteries, featuring a clear LCD display for voltage and power monitoring, dual USB and Type-C fast charging ports, and safety functions like bad battery detection. Compact and lightweight, it supports charging up to four batteries simultaneously and includes a handy flashlight function, making it an essential tool for tech-savvy professionals and DIY enthusiasts alike.

Specifications

ASIN	B094FF9P58
Amperage	2 Amps
Battery Capacity	10000 Amp Hours
Battery Cell Type	Polymer
Battery Charge Time	12.00
Best Sellers Rank	#34,969 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #880 in Cell Phone Portable Power Banks
Brand	LIJIANI
Color	case
Compatible Devices	Smartphone
Connector Type	Micro USB, USB Type C
Customer Reviews	4.2 out of 5 stars 164 Reviews
Item Dimensions	4.49 x 3.23 x 0.94 inches
Item Weight	118 Grams
Manufacturer	LIJIANI
Maximum Output Power	10 WATTS
Mfr Part Number	M09a
Model Number	M09
Number of Batteries	Lithium Polymer batteries required.
Number of Ports	2
Other Special Features of the Product	Digital Display, Fast Charging, Pocket Size
Output Wattage	10 Watts
Portable	Yes
Power Source	Battery Powered,Corded Electric,Rechargeable
Reusability	Rechargeable
Special Feature	Digital Display, Fast Charging, Pocket Size
UPC	754469737440
Unit Count	1 Count
Voltage	5 Volts
Warranty Description	1 year

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TrustScore 4.5 | 7,300+ reviews

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$44.32

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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The delivery time was excellent, and the packaging was secure.

2 months ago

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