This HAS to be the ultimate Ping 48V15Ahr Battery Case!

[chvidgov.bc.ca]

Polycarbonate Lexan Waterproof Enclosure with Handle...IT FITS PERFECTLY yES!

Plano 1470GS Waterproof Case, under fishing products on the Plano website. Bought one today at Westmarine.



The Ping fits absolutely perfectly in the inner dimensions of the box, with just enough room to create a reasonable 3 cm. air cavity around the BMS, and have closed cell 1/4 inch foam around the rest of the battery for shock/vibration protection. I'm sure the Lexan is "bulletproof" for impact protection.

One small drill hole for the wires. Charger wire left inside, so that lid is opened while charging.

It snaps shut over the Ping and is rather indestructable, and transparent. I am going to stealth it.

The carrying handle seems quite well made for carrying the module. You could ventilate the BMS with more holes, but I think most of the heat is generated during charging. It's nice to have a good handle - steel and polycarbonate.

It's awesome! It would be neat to have a wireless thermometer inside it. I can see the LEDS on the Signalab twinkling through the box...

They are expensive - around 52 Cdn. but I think this is a worthwhile investment, barring overheating issues. You could still ventilate the BMS more, if desired, at the cost of waterproofness, but not impact or vibration protection.

i'm not sure what else you could want, for a portable indestructable shell for the PING, which is waterproof

I've been looking for such an exoskeleton for the PING for years...EUREKA

[rojitor]

I put two 36v 15ah ping batteries here http://www.chainreactioncycles.com/Models.aspx?ModelID=43821
It fits very well and i even have room for some tools.

[chvidgov.bc.ca]

I tried a trunk bag, but I melted my FETs due to fabric from the bag smothering the BMS and melting onto them. I would suggest opening the lid during charging especially.
I've seen various heatsink mods for Signalab BMS's on ES as well. I think "bulletproof" is good. Also I move my Pings around over seven different bikes so to have a strong modular solution which can handle the abrasion of routine handling is a good thing too. I'm glad your solution is working well for you In my experience, I'm now removing the blue heatshrink over the BMS, especially that the whole unit is now perfectly waterproof. I've also sprayed the BMS with conformal coating.

[Tench]

Is the 36v20a v2.5 Ping the same size as the 48v15a? they are both the same AH capacity. The Father in law has been looking for a box to put his battery in.

Simon.

[motorino magnet]

I put two 36v 15ah ping batteries here http://www.chainreactioncycles.com/Models.aspx?ModelID=43821
It fits very well and i even have room for some tools.

do you run them in series or paralell

[rojitor]

Series 72v 15ah

[chvidgov.bc.ca]

Yes. The 36V 20Ahr Ping is exactly the same linear dimensions and will also fit perfectly in this box, according to the Ping battery web site published dimensions.

I got an oven thermometer and put the probe 1/2" inch from the BMS <charging?> Fets, over the blue shrinkwrap at first, and I found that the temperature only rose by 3C over a 15 mile ride with bursts to 20 amps, mostly under 1C discharge. The temperature went up by 5C on recharging the battery, (about 6Ahr into the battery), with the lid open about 1/2 inch. So there is definitely more heat coming out of the BMS during charge, rather than discharge. Its nice that you can see the thermometer through the Lexan, and the LEDS. I stealthed the boxes in "Gorilla Tape black".

It's interesting, now the charge cycle is over, the temperature rose to 90 degrees F in the vicinity of the BMS. So with all the LEDs glowing, there is still considerable dissipation of heat on an ongoing basis, which could easily build up. The most heat buildup occurs after the charging is complete! I thought it would be during charging, but I guess most of the energy is entering the battery, unlike at the end. So it is definitely worth having the lid open a crack. So I have removed all the blue and clear shrinkwrap for better heat dissipation. I have conformal on the V1 Signalab on the other Ping, also with no shrinkwrap.

This is a very nice solution, and I've already bought another one and did my other Ping as well this way. The portability, waterproofness and protection are all excellent, and the transparency is useful, as well as the handle. And there are also failsafe closure tabs if you look closely beside the main snapdown element, which I've closed with mini stainless carabiners. So the lid can be deterministically shut which would be good in an accident. They also don't weight hardly anything, compared to metal boxes. The whole module can easily be dropped in a pannier, or put in a wire basket, which is probably the best. Quick removal from the bike.

I'm convinced at this stage that there will be no unexpected heat issues, as I've ran the same setup (lid open for charging) with the other orange marine box from Plano (1412 box) which was ok but not nearly as good at the 1470GS model, and it wasn't Lexan polycarbonate or particularly secure with the lid, and it was bigger.

Chris

[dogman]

I've always said ventilate your bms on a ping, But I do live in a hot climate. All I need is a slightly oversize hole letting the wires out to do the job.

The main thing is to avoid smothering the crap out of the bms with padding materials like foam.

Tacklebox for the win, I've been using the perfectly sized metal ones for years. They can be hard to find though. Can't be bought new.

This looks real good, better than cheap brittle polyethylene boxes.

[chvidgov.bc.ca]

Here is the waterproof Ping Battery module in the Westmarine Box...note the black duct tape for stealth. I left a hole in the tape so you could see the LEDs lighting up

ClosedBox.jpg (156.9 KiB) Viewed 1351 times

Here is the Ping in the open box...ready for charging...note: I removed all the blue shrinkwrap...Perfect little cavity for air circulation.
I leave the box open for charging, as the charger plug is inside the box...forces me to leave it open when charger is connecte...

OpenBox.jpg (140.8 KiB) Viewed 1351 times

The handles are very nice for carrying them, and the three snap on hinges are very secure to keep the box closed.

There is an o-ring in the lid.

[Tommy L]

This is a very nice find!

I have a FS Mountain. No where really to put one of these.
So, It's backpack for now. I guess it's time to build a frame.... lol

Tommy L sends.... \\m//