More 3d printed parts added to the tool kit. 21700 3×4 holders and custom covers dispensing the need for rolls of sticky tape and heat shrink.
This pack is ready for first charge and discharge cycle testing. Then it’s off to a customer 👍🏻
Another 20aH pack worth of 21700 cells for some lucky customer…
They really are beasts 😜
Included in the price of your Piigbox is a paint job. So you can have your colours.
Now I’m not a painter, but I try my best to get the best finish I can. So as long as it’s not a crazy complicated idea, I should be able to give you something awesome and unique.
Why bother?
Well. The ammo cans are brand new stock, so don’t ‘need’ painting, but when you start cutting holes in for speakers, they need a bit of touching up. So they need paint anyway.
Having said all that, I’m designing a speaker grommet to go around the holes for anyone wanting to keep the original colour and writing. It will become an even cheaper Piigbox option. Winner winner piig dinner…
I’ve been thinking of different options for Piigbox and have decided to offer two distinct products with great value price points. ‘Sounds & Charge’, a ‘Full Monty’ pack, with a 20Ah pack, capable of charging your lipos in the field. Or go for ‘Sounds’ package with a smaller 3.5Ah pack.
So look out for each in the store soon…..
You know what it’s like, the sun is beating down, you’re out in your favourite bando and you’re running out of packs. You’re just warming up and you’ve already smashed that trick you’ve been practicing. You’ve got your footage, but you’re itching to keep flying. If only you had some way of charging a few packs up. You can with PiigBox. Designed around a chunky lithium-ion pack, they come with XT60 socket so you can run a lipo charger in the field.
How many packs though…
Well, after much research on the subject, I’ve settled on the following ‘scheme’ to determine that.
We calculate the mWh as a common factor for both the field charging pack, and the packs you’re using. I can hear you think “But you never fully charge a lipo, you take it from storage to full”. This is true, but the same goes for the field charging pack, you don’t want to fully discharge that. So I’ve found the aWh route to be the most appropriate:
For example:
Our 3S 12 cell 21700 packs use 5000mah cells
The mWh is calculated by multiplying mAh x V so 5000 (mAh) * 4.1 (Volts) * 12 (cells) = 246,000 mAh for the whole pack
We now calculate the mWh figure for your lipo batteries
For example:
A 6S 1300mah lipo would be – 1300 (mAh) * 21.6 (Volts) = 28,080mWh for the pack
So you can charge 8 * 6S – 1300mAh packs
or
You charge 10 * 4S – 1500mAh packs
I’ll do some testing to verify this but I’ll quote theoretical 6S 1300mah packs and 4S 1500mah packs in adverts.