[3.7 VDC] Full Disclosure: Coast provided me this ZX600 battery in order for me to test it out. But, everything I will talk about in this review is my own opinion.

Coast Portland was not given copy approval nor any editorial input in this review. That means, they're reading this review for the first time along side you.

These are the topics I will cover. Skip to whatever corresponding number in order to read about that specific topic and find what you are looking for.

1) Overview

2) What I Dislike

3) Charging Port/Charging Indicator

5) Charge Time/Battery Satistics
6) Thoughts

The Individual Topics Begin Here:

1) Overview:

• The ZX600 battery is desighned to fit in place of 3 AA batteries

• It is a lithium-polymer battery

• It has a hard casing and can be inserted only one way with large marking denoting positive (+) and negative (-)

2) What I Dislike:

• I dislike the use of a Micro-USB port to charge the battery instead of a newer USB-C port

• Recharge time is ridiculously long

3) Charging Port/Charging Indicator

• There is a Micro-USB port on the front of the battery

• There is a charging indicator to the left of the Micro-USB port

• A solid red light indicates charging and a solid green light indicates the battery is fully charged

4) Charge Time/Battery Satistics:

• The battery was tested from completely dead

Rated Capacity: 2100 mah

Tested Capacity: 2241 mah

Charge Speed: 450 mah

Time: 5 hours 34 minutes

5) Thoughts:

I really like the concept of this battery. I love how it is designed to just fit in place of where AA batteries normally go while still allowing the use of AA batteries if necessary without any fuss.

I do wish they would make a generation 2 of this battery adding much needed improvements. Overall, it is a genius solution.

[1] These are great little batteries, I have had my original small inspection light for more than three years and I’m lost without it. Recharge it almost every night and still works great.

[Lithium-Ion] I have thousands of dollars In Led lights, and this little light is nice. Its got and bright and manageable beam and works great for night lamp by the side of my bed. Coast make excellent products, and to have a spare battery makes it helpful. All LEDs lights have there own unique quality and its a nice little light.

[0.275 lb] Works as advertised! Delivers good power and lasts for long

[Lithium-Ion] It is a good product - but it is a little bit bigger compare than others

[0.275 lb] While it is nice to have a quick swap battery pack, for myself I have yet to really need this i just swap at the end of the day. 3-5 hrs of use per day means for me just the stock battery is more than enough

[1] You will need an extra, my PM500R runs long on a charge. But, if you run out of battery it takes a long time to recharge the ZX600

[3.7 VDC] Battery life is excellent and maintains flashlights brightness!

[3.7 VDC] Was a replacement for a non working battery that arrived with a flashlight. Arrived quickly and in perfect working order. Great customer service as always Fast shipping

[Lithium-Ion] Powerful and lightweight. Does the job. Works perfectly.