[RE-wrenches] Hawker versusu MK

[Ray Walters]

We use a high lift jack to lift the case up onto a carrier we've made. 
Roll them right into the room. We then use the high lift to push them 
exactly into place, with a wood brace against the wall. I'm still a HUP 
fan fro the cycle life (2100 cycle to 80% DOD) but if the 1500 cycle 
batteries are 30% cheaper, then they're the better deal ( not counting 
the cost of  moving batteries sooner)
I will third the Rolls problems; we had a reversed cell that we were 
shipped new.  A guy with a multimeter at the loading dock could prevent 
these dead ducks from flying.  The customer was out of power for 6 weeks 
waiting for the replacement,  while we paid $200 shipping.  For the 
money vs. cycle life vs. warranty, we just weren't loving the Rolls.  
They are easier to move, which is a good thing, but HUP pays shipping 
and for your time for the first year.

R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

On 8/13/2013 3:29 PM, jay peltz wrote:
> Hi Dick,
>
> Best trick I ever learned for these metal cased is to build  a
> wheeled base with steel wheels.
> Yea, still have to get them onto the base, but then its easy.
>
> Also when I  use metal cased batteries I like to have them with removable series interconnects
> not the welded type.
>
> Interesting to hear the comments on the Rolls shipping.  I've seen that problem myself, but
> didn't realize that it was so common.
>
>
> jay
>
> peltz power
> On Aug 13, 2013, at 9:31 AM, Richard L Ratico wrote:
>
>> I've got two Hawker installs out here, a 48 Volt and a 24 Volt system. Both are
>> going on 6 years or so. Clients are happy, I'm happy. It does resemble work to
>> move and place them. We typically use "Egyptian" techniques when heavy equipment
>> isn't available or appropriate. Inclined plane, big pry bars, rollers, come
>> along, block & tackle. It's kind of fun to try to outsmart the mass. It's
>> interesting to experience gravity's effect on lead, atomic weight 207.2. Glad
>> it's not Uranium at 238. Thankfully, we've not had to replace a cell. That
>> always sucks, regardless.
>>
>> If I remember correctly, the steel cans had welded seams. The cans make the use
>> of insulated tools even more important. Should you ground the cans???
>>
>> Speaking of replacing cells. I looked at a 5 year old bank of 8 Rolls L16s this
>> weekend. Two of the batteries had a dead cell. This in a bank that had a single
>> battery replaced at 6 months or less because of a bad cell.
>>
>> I've also got a 7 year old bank of 12 Surrette / Rolls 2 Volt units installed.
>> The only problem so far was on day one when they arrived. They were shipped on a
>> single, narrow, beat up pallet. Some had obviously tipped over in transit and
>> had lost a considerable amount of electrolyte. Northern Arizona Wind & Sun
>> user's forum has posts reporting similar experiences.
>>
>> I dread receiving expensive pallets of batteries and modules from shippers. High
>> percentage of damage. Steel cans instead of plastic wrap is worth thinking
>> about.
>> Hope this doesn't just muddy the water.
>>
>> Dick Ratico
>> Solarwind Electric
>> _______________________________________________
>> List sponsored by Home Power magazine
>>
>> List Address: RE-wrenches at lists.re-wrenches.org
>>
>> Change email address & settings:
>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>>
>> List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>>
>> List rules & etiquette:
>> www.re-wrenches.org/etiquette.htm
>>
>> Check out participant bios:
>> www.members.re-wrenches.org
>>
> _______________________________________________
> List sponsored by Home Power magazine
>
> List Address: RE-wrenches at lists.re-wrenches.org
>
> Change email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules & etiquette:
> www.re-wrenches.org/etiquette.htm
>
> Check out participant bios:
> www.members.re-wrenches.org
>
>