Does the negative side of the battery go in first (toward the spring inside)? I don't see any polarity indication within and no instruction sheet.

The positive terminal of the battery goes into the flashlight first.

Why is there a false claim of capacity listed? These cells do not have anywhere close to the advertised capacity.

I'm not sure that's a question That I could answer. but I guess it's just buyer beware and typical false advertising and they just want to see how much I can get away with before they have to take it down.

does it come with a battery case /holder how many batteries dows it come with

It doesn’t have a case. It comes with 6 batteries. I put the batteries I’m not using in a small reusable plastic box.

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Description

🔌 Charge smarter, not harder — power up with MAXIAEON!

COMPACT DURABLE - Lightweight aluminum alloy build (249g) combines portability with rugged reliability for on-the-go professionals.
INSTANT STATUS INSIGHT - Red/Green LED indicators keep you informed with real-time charging status for each battery slot.
POWER THROUGH YOUR DAY - Massive 9900mAh capacity ensures your devices stay energized longer without constant recharging.
STAY COOL CHARGE SMART - Advanced temperature protection automatically halts charging to prevent overheating and extend battery life.
UNIVERSAL COMPATIBILITY - Designed to charge all 3.7V lithium-ion batteries, perfect for flashlights, headlamps, and doorbells.

The MAXIAEON 18650 Rechargeable Battery Charger offers a robust 9900mAh capacity with smart temperature protection and intuitive LED charging indicators. Compatible with all 3.7V lithium-ion batteries, this compact and durable charger is ideal for powering flashlights, headlamps, and doorbells, ensuring your essential devices stay ready whenever you need them.

Specifications

Brand	MAXIAEON
Manufacturer	Shantou Baihao Technology Co., Ltd
Model Name	1
Product Dimensions	24.38 x 13.97 x 4.06 cm; 249 g
Batteries	1 Lithium Ion batteries required. (included)
Light Source Type	Led
Special Features	Adjustable Light Modes, Rechargeable
Mounting Hardware	Battery
Number of items	1
Voltage	3.7 Volts
Power Source	Battery Powered
Battery Description	Lithium-Ion
Batteries Included	Yes
Batteries Required	No
Battery cell composition	Lithium Polymer
Material	Aluminum Alloy Steel
Does it contain liquid?	No
Manufacturer	Shantou Baihao Technology Co., Ltd
Item Weight	249 g

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