Re: [EVDL] Lots of 12v lithium batteries available.

2018-05-26 Thread Willie via EV 



On 05/26/2018 07:46 AM, Dan Baker via EV wrote:

This a great relevant thread for me.  I'm interested in going from Lead to
Lithium on my boat and I believe Volt cells are likely the most available
and least expensive to me.  The Volt cells appear to have different charge
points than most Lithium so the HB404 looks like a great solution.  Jerry,
do you just use one HB404/ contactor  for a string of cells that add up to
120v when charged? No other BMS? I'm looking at doing 96v setup, doubling
my current 48v setup.  I was thinking 2 x 48v packs, 2 HB404s and
contactors and using 2 x 48v chargers that I already own.  Appreciate any
advice on this, excited to switch to Lithium but nervous of destroying a
set in the learning stage lol.


This:
http://www.ebikes.ca/product-info/cycle-satiator.html
looks like a pretty good solution.  A bit pricey for the current 
supplied.  I've been looking at reducing the charge voltage on my 36v 
hoverboard batteries as well as charging my ~48v Volt modules and that 
thing should do both.  Haven't yet bought one.



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Re: [EVDL] Lots of 12v lithium batteries available.

2018-05-26 Thread Dan Baker via EV 
This a great relevant thread for me.  I'm interested in going from Lead to
Lithium on my boat and I believe Volt cells are likely the most available
and least expensive to me.  The Volt cells appear to have different charge
points than most Lithium so the HB404 looks like a great solution.  Jerry,
do you just use one HB404/ contactor  for a string of cells that add up to
120v when charged? No other BMS? I'm looking at doing 96v setup, doubling
my current 48v setup.  I was thinking 2 x 48v packs, 2 HB404s and
contactors and using 2 x 48v chargers that I already own.  Appreciate any
advice on this, excited to switch to Lithium but nervous of destroying a
set in the learning stage lol.

Cheers
Dan

On Thu, May 24, 2018 at 1:36 PM Len Moskowitz via EV 
wrote:

> Thanks Jerry, but I'd like to keep the lead-acid form factor and use the
> existing charger.
>
> Len M.
>
> -
> On Thu, May 24, 2018 at 12:30 PM, jerry freedomev wrote:
>
>
>
>Hi Len and All,
>2  5kwh,  120vdc nom  Volt modules would by far be the best,
> lowest cost solution.  And for charging just add an HB404 wthr meter and
> a contactor to cut the voltage off at fully charged using your present
> charger likely.
>Each take about the same space as 2.5 of your 12vdc lead
> batteries.  And cost $1500-$2300 buying modules, not much more than
> lead, less than premium lead.
>Since 2 modules will put out 2k amps and weigh much less,
> lead EVs  I've sold them for nicely  increase both range and pickup even
> with the same rated kwh.   And one can add another module or 2 for more
> range.
>  My rebuild of my EV trike pickup into the subcar it was
> suppose to be  I'll put 2 5kwh modules in it for about 120 mile range.
> Could put in 250 miles worth.
>  Jerry Dycus
>
>
>
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Re: [EVDL] Lots of 12v lithium batteries available.

2018-05-24 Thread Len Moskowitz via EV 
Thanks Jerry, but I'd like to keep the lead-acid form factor and use the 
existing charger.


Len M.

-
On Thu, May 24, 2018 at 12:30 PM, jerry freedomev wrote:



   Hi Len and All,
   2  5kwh,  120vdc nom  Volt modules would by far be the best, 
lowest cost solution.  And for charging just add an HB404 wthr meter and 
a contactor to cut the voltage off at fully charged using your present 
charger likely.
   Each take about the same space as 2.5 of your 12vdc lead 
batteries.  And cost $1500-$2300 buying modules, not much more than 
lead, less than premium lead.
   Since 2 modules will put out 2k amps and weigh much less, 
lead EVs  I've sold them for nicely  increase both range and pickup even 
with the same rated kwh.   And one can add another module or 2 for more 
range.
 My rebuild of my EV trike pickup into the subcar it was 
suppose to be  I'll put 2 5kwh modules in it for about 120 mile range.  
Could put in 250 miles worth.

 Jerry Dycus



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Re: [EVDL] Lots of 12v lithium batteries available.

2018-05-24 Thread jerry freedomev via EV 

   Hi Len and All,   2  5kwh,  120vdc nom  Volt modules would by far be 
the best, lowest cost solution.  And for charging just add an HB404 wthr meter 
and a contactor to cut the voltage off at fully charged using your present 
charger likely.   Each take about the same space as 2.5 of your 12vdc 
lead batteries.  And cost $1500-$2300 buying modules, not much more than lead, 
less than premium lead.   Since 2 modules will put out 2k amps and 
weigh much less, lead EVs  I've sold them for nicely  increase both range and 
pickup even with the same rated kwh.   And one can add another module or 2 for 
more range. My rebuild of my EV trike pickup into the subcar it was 
suppose to be  I'll put 2 5kwh modules in it for about 120 mile range.  Could 
put in 250 miles worth. Jerry Dycus 

  From: Len Moskowitz via EV <ev@lists.evdl.org>
 To: Lawrence Rhodes <primobass...@sbcglobal.net> 
Cc: Len Moskowitz <lenmoskow...@optonline.net>; EVDL <ev@lists.evdl.org>
 Sent: Thursday, May 24, 2018 10:04 AM
 Subject: Re: [EVDL] Lots of 12v lithium batteries available.
   
Lawrence: Do you have any suggestions for our old VW Jetta conversion? 
It currently uses ten 115 Ah Group 27DC lead-acids.


Len Moskowitz

-

On Thu, May 24, 2018 at 05:19 AM, Lawrence Rhodes via EV wrote:

> There are starting to be a lot of safe lithium, lead form factor, 
> replacements on the market.  This might be a way to restore old 
> electric scooters and conversions.  You might be able to use your old 
> battery racks.  Get a bit more range than they had as lead sleds.  
> Another benefit is many have good BMS so battery balancers are not 
> needed. Worst case is batteries might have to be charged separately 
> once in a while. That being said maybe it's a good idea to always 
> charge them separately. A balanced pack is a happy pack.   Lawrence 
> Rhodes
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Re: [EVDL] Lots of 12v lithium batteries available.

2018-05-24 Thread Len Moskowitz via EV 
Lawrence: Do you have any suggestions for our old VW Jetta conversion? 
It currently uses ten 115 Ah Group 27DC lead-acids.



Len Moskowitz

-

On Thu, May 24, 2018 at 05:19 AM, Lawrence Rhodes via EV wrote:

There are starting to be a lot of safe lithium, lead form factor, 
replacements on the market.  This might be a way to restore old 
electric scooters and conversions.  You might be able to use your old 
battery racks.  Get a bit more range than they had as lead sleds.  
Another benefit is many have good BMS so battery balancers are not 
needed. Worst case is batteries might have to be charged separately 
once in a while. That being said maybe it's a good idea to always 
charge them separately. A balanced pack is a happy pack.   Lawrence 
Rhodes

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