Wilderness Systems Heavy Duty Lithium Battery (15,000mAh)

After my first 10 Ah battery stop working for no obwious reason , I noticed a new model with bigger capacity.I decided to take a chance and buy a 15Ah version.So far is working well and after a few hours on the water , battery is still almost fully changed.It is important to know how much power is needed, so current drawn from a battery will not exceed allowable amount.I do like a small size and weight of this product, and relative water resistance from splashing is helpful.So far I am happy with this battery and hope it will last.

When I was looking for a battery to power a fish finder for my kayak, I was pretty much decided on the Nocqua power pro kit, because that seems to be the go-to for kayak anglers on all the forums I follow. Then, I saw this little guy. I've always had good experiences with Wilderness Systems products, and was excited to see that they had a comparable offering. This one even comes with two 5v usb charging ports. I was sold!So far, this battery seems to be a great. It's very lightweight, which is great for kayak anglers. I have a sit-on-top kayak that doesn't have a lot of hull access, an I was not crazy about mounting the battery in the hull. I was pleased find that the light weight of this battery allows me to simply zip-tie the battery to my yakattack mount for my striker 4. This allows me to have the fish finder and power source in a self-contained unit that can just bolt onto a gear track! This mounting option also allows me access to the available usb charging ports. I would have had to run additional wires to make that happen, had I chosen to mount the battery in the hull.I only made one hole in the kayak, and that's for the transducer cable. Super clean and easy to manage. That's exactly what I was looking for. I've done some basic testing of the battery, and it is able to run the striker 4 for 8+ hours continuously (I have yet to fully drain the battery), on the brightest setting in simulation mode. I'll update this review with any additional findings out on the water. I plan on taking it out this weekend.

Not pretty, but seems functional. Why didn’t quality control fix this? Seems like a glue issue (I hope)

This thing last all day and some!

Awesome Battery. So much power in a tiny package. Last all day with my Lowrance Hook 7 fish finder. Great job. Highly recommended.

Lasted about 1 hour with a Lowrance Hook 5 TS. Tried to charge the battery after the first use and it won't even take a charge. Unfortunately I waited until outside the return window to use the battery. Now I'm stuck with a brick. Don't waste your time or money.

I boight this pack at a local kayak shop on clearance for $60. Even at $60 it is extremely overpriced. It worked well on my Garmin 4cv vivid fpr about 4 months. During that time I noticed it would run the Garmin less and less. Now, after maybe a dozen uses, it can bately charge to 12VDC.This is a cheaply made bank of 6 x 18650 batteries. Each battery is listed as 3.6V and 9Wh. Quick math....9Wh/3.6V equals 2.5 ah. So these batteries are 2500mah. Multiply that by 6 batteries and you get their claim 15ah rating. So even a brand new, correctly working pack, is not 15ah when used for any fish finder since the fish finders a 12VDC and not 3.6VDC.How the pack is configured also raises questions on actual capacity. Its pretty poorly assembled too.Bottom line, dont buy this battery.

I’m the south we have power outages sometimes for no reason at all and it can be from minutes to days. This heavy duty charger kept my family keep in touch with the outside world during a 6 day ice storm. We kept our phones charged and were able to help others get charged as well. I will be purchasing one of these for each house.