Would this work for other brand headlamps that take AAA batteries?

It didn't fit my Petzl Tactikka + RBG Headlamp purchased in 2017.

How many mah does this have? does it store more power than 3 regular aaa batteries?

It's going to be about the same as 3 regular (duracell coppertop) AAA batteries. 1250mAH@3.6V vs 1.2Wh @100mA for the regular batteries. It's a little complicated as one person answered because the voltage drop depends on both the current draw and time. It's not linear for either battery type. Note that the PETZL rechargeable weights the same as 2 regular AAA's, not 3, so there's an advantage there.

What size charger is correct for this battery? My 5v samsung charger has been almost 2 hours i do not want to damage it.

That should be no problem, especially if the battery is very low. It just uses an Android charger like yours and can sometimes take 4 or 5 hours to charge fully.

Is this compatible with petzl - tikka headlamp, 200 lumens ?

If it says it can take the petzl core, but I'm not entirely sure

Core Rechargeable Battery

Product ID: 275912641

Details

Colour
Standard
Power source
Battery
Light source type
LED
Material
Other
Included components
Bike Parts

⚡3-Hour Fast USB Recharge

💡LED Charge Indicator

🔋1250 mAh High Capacity

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£150.43

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Sold byAmazon UKDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Light up your adventure with power that never quits!

STAY INFORMED - Smart LED indicators show charging status—red while charging, green when fully charged.
POWER THAT LASTS - 1250 mAh Lithium-Ion battery delivers extended lighting performance for your HYBRID headlamps.
RECHARGE ON THE GO - Integrated USB port enables quick and convenient 3-hour recharge anywhere, anytime.
ECO FRIENDLY ENERGY - Sustainable rechargeable design reduces waste and saves money over disposable batteries.
UNIVERSAL COMPATIBILITY - Seamlessly powers multiple Petzl HYBRID headlamp models for versatile outdoor adventures.

The Petzl Core Rechargeable Battery is a lightweight, high-capacity 1250 mAh Lithium-Ion power source designed specifically for Petzl HYBRID headlamps. Featuring a fast 3-hour USB recharge and intuitive LED charge indicators, it offers an eco-friendly and economical solution for reliable lighting in all your outdoor pursuits.

Specifications

Color	Standard
Size	One size
Style	Single
Compatible with	Linterna, TACTIKKA CORE, TACTIKKA, TACTIKKA +, TACTIKKA +RGB
Material Composition	Specifications Weight: 23 g Certification(s): CE, UKCA Type: battery rechargeable Lithium-Ion 1250 mAh Charging time: 3 hours
Height	1.25 inches
Length	4.75 inches
Weight	0.02 Kilograms
Width	4.75 inches
Shape	headlamp
light-source-type	LED
Material Type	Other
Number of Items	1
Number of Pieces	1
Power Source	Battery Powered
Season	toutes_saisons
Sport	campsite
Included Components	Bike Parts
Batteries Included?	No
Description Pile	Lithium-Ion
Brand	PETZL
Department	Unisex-Adult
Manufacturer	Petzl
Item model number	E99ACA
Product Dimensions	1 x 1 x 1 cm; 23 g
ASIN	B01L328L72

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