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70 Posts
Discussion Starter #1
I wanted to give a pointer to a small RC-type charger that has worked very
well for me with Thundersky cells when I need to top up some cells to
balance the pack. The charger is the Sky Charger B6AC 6-in-1 Dual RC
Battery Charger. I bought it from Amazon.

The charger works on: lead-acid, NiMH, NiCd, LiPo, LiFe, Li-Ion. I have
only used it on Thundersky LiFe cells, but reviews on Amazon have attested
to the other capabilities.

Features:

- Can charge 1-6 cells in a serial chain. It can provide up to 5A, but
only 50W, so the amperage will go down as multiple serial cells are charged.
- Runs off both AC and 12V. I've only used it from the AC source.
- It seems to do a really nice job of tapering the input voltage. I've
never had it trigger the miniBMS shunt or alert.
- It shows how many Ah were put into the cells. It also shows the
voltage and current going into the cell(s).
- It also has a way to monitor cells with a PC over USB. I haven't used
that capability.
- It also has a discharge/balance facility. I haven't used that
capability either.

I've generally used this charger to top-balance cells that were low. It has
worked well for me. It was about $60 on Amazon.

Mike

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70 Posts
Discussion Starter #2
Mike,

is this the charger?
http://www.amazon.com/Charger-Battery-Batteries-Charging-Software/dp/8499000193

if so, searching for "Sky Charger B6AC" also gives
http://www.nitroplanes.com/skychb65dupo.html
as an alternate source at the same price.


I have found once a brand, model, and type have been found, searching
for it in other than EV sources has been beneficial. In this case, the
RC world is a source to help the EV world.


Way-way back when, I had already shown, the Manzanita Micro line of
pfc chargers were worth every penny, especially to get-around the
automaker's demand that circuitry be included in the EVII ICS-200
AVCON charging-head that stopped the EVSE from working if the EV's
on-board charger did not have a 95%+ (or better) power-factor-control
(Zivans or less would not work).

At that time, my next EV charger project was to seek an alternative
pack charger at or below the price of the lowest cost PbSO4 charger,
which at the time was either a used KW BC-20 dumb charger or a Russco
charger. Some web research came up with cost effective boat chargers
with multiple 12VDC outputs. In that case the Boat World had chargers
EVs could use, helping the EV World.

I chose three different dual pro boat charger models rated with a 10A
output. While my multiple chargers on one pack idea was seriously
poo-poo'd by evdl members as leaving myself open for more variables to
cause a failure, the chargers worked fine. Plus an added benefit was
they balanced the pack much better and quicker than an over charge
cycle when using one high-voltage output charger.

Even though the price came in lower than a Russco charger, sadly, I
found the Dual Pro amperage output was not a real-world-value (like
a large cereal box with the top 20% inside is just air). These chargers
at that time were actually of the older automotive transformer design.
Thus they only put out 10amps with a near dead-short load, and
tapered quickly to 5 amps even-with a fully depleted pack. Also, their
inefficiency heated their cases.

Thus, I reported to the evdl I could NOT recommend those Dual Pro
chargers because they did not put out the rated power, they were
heavy, and needed to be mounted where the heat would dissipate. I
see on the Dual Pro website that they have newer designs (perhaps my
EVangel efforts to work with their engineers rubbed off on them and
they fixed some issues?). I have not tried them, so I still can not
recommend them.

Besides, now there are other companies that make similar products to
choose from. Today, there are so many more off the shelf products
EV'rs can choose from. I is a great time to do a conversion or a mod
to an older Production EV, or mod a hybrid to an full EV mode, etc.

Recapping, once you have the details of what you want, check the
items offered in not only the EV component businesses, but the:
Solar, Wind, RC, RV, UPS, and other worlds as well.


Sidebar
I still have a couple of the Dual Pro chargers, and they still have
not failed. However, I recently bought a Soniel 12V charger I am
quite pleased with. Its a very good bang-for-the-buck for the
smarts, isolation, and high pfc you get
[ http://soneil.com/products.html ]

When I get another EV, I would likely look to not have the six
on-board charger design as before, not with all the public EV
charging that being installed. I would likely have at least two
on-board chargers: -a pfc-40 and -a string of Soniel chargers.

I could then plug-in both the J1772 and the 5-20 outlet on a
Coulomb EVSE.
[ http://4evriders.org/wp-content/uploads/2010/01/chargept.jpg ]
Having 7.5kW+ instead of 6kW is a nice feeling and gives you that
solid EV-charging Grin :-D


--
View this message in context: http://electric-vehicle-discussion-list.413529.n4.nabble.com/Top-up-Charger-tp3306953p3307724.html
Sent from the Electric Vehicle Discussion List mailing list archive at Nabble.com.

_______________________________________________
| REPLYING: address your message to [email protected] only.
| Multiple-address or CCed messages may be rejected.
| UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
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·
Registered
Joined
·
70 Posts
Discussion Starter #3
Yes, that is the charger I'm using. It seems to deliver what it says. It
is 5A or up to 50W and it does seem to hold that. Not exactly spectacular
for a 100Ah cell, but I really value that it doesn't overcharge. It charges
the Thundersky LiFe cells to 3.6V.

Mike

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf
Of brucedp4
Sent: Tuesday, February 15, 2011 2:54 PM
To: [email protected]
Subject: Re: [EVDL] Top-up Charger


Mike,

is this the charger?
http://www.amazon.com/Charger-Battery-Batteries-Charging-Software/dp/8499000
193

if so, searching for "Sky Charger B6AC" also gives
http://www.nitroplanes.com/skychb65dupo.html
as an alternate source at the same price.


I have found once a brand, model, and type have been found, searching for it
in other than EV sources has been beneficial. In this case, the RC world is
a source to help the EV world.


Way-way back when, I had already shown, the Manzanita Micro line of pfc
chargers were worth every penny, especially to get-around the automaker's
demand that circuitry be included in the EVII ICS-200 AVCON charging-head
that stopped the EVSE from working if the EV's on-board charger did not have
a 95%+ (or better) power-factor-control (Zivans or less would not work).

At that time, my next EV charger project was to seek an alternative pack
charger at or below the price of the lowest cost PbSO4 charger, which at the
time was either a used KW BC-20 dumb charger or a Russco charger. Some web
research came up with cost effective boat chargers with multiple 12VDC
outputs. In that case the Boat World had chargers EVs could use, helping the
EV World.

I chose three different dual pro boat charger models rated with a 10A
output. While my multiple chargers on one pack idea was seriously poo-poo'd
by evdl members as leaving myself open for more variables to cause a
failure, the chargers worked fine. Plus an added benefit was they balanced
the pack much better and quicker than an over charge cycle when using one
high-voltage output charger.

Even though the price came in lower than a Russco charger, sadly, I found
the Dual Pro amperage output was not a real-world-value (like a large cereal
box with the top 20% inside is just air). These chargers at that time were
actually of the older automotive transformer design.
Thus they only put out 10amps with a near dead-short load, and tapered
quickly to 5 amps even-with a fully depleted pack. Also, their inefficiency
heated their cases.

Thus, I reported to the evdl I could NOT recommend those Dual Pro chargers
because they did not put out the rated power, they were heavy, and needed to
be mounted where the heat would dissipate. I see on the Dual Pro website
that they have newer designs (perhaps my EVangel efforts to work with their
engineers rubbed off on them and they fixed some issues?). I have not tried
them, so I still can not recommend them.

Besides, now there are other companies that make similar products to choose
from. Today, there are so many more off the shelf products EV'rs can choose
from. I is a great time to do a conversion or a mod to an older Production
EV, or mod a hybrid to an full EV mode, etc.

Recapping, once you have the details of what you want, check the items
offered in not only the EV component businesses, but the:
Solar, Wind, RC, RV, UPS, and other worlds as well.


Sidebar
I still have a couple of the Dual Pro chargers, and they still have
not failed. However, I recently bought a Soniel 12V charger I am
quite pleased with. Its a very good bang-for-the-buck for the
smarts, isolation, and high pfc you get
[ http://soneil.com/products.html ]

When I get another EV, I would likely look to not have the six
on-board charger design as before, not with all the public EV
charging that being installed. I would likely have at least two
on-board chargers: -a pfc-40 and -a string of Soniel chargers.

I could then plug-in both the J1772 and the 5-20 outlet on a
Coulomb EVSE.
[ http://4evriders.org/wp-content/uploads/2010/01/chargept.jpg ]
Having 7.5kW+ instead of 6kW is a nice feeling and gives you that
solid EV-charging Grin :-D


--
View this message in context:
http://electric-vehicle-discussion-list.413529.n4.nabble.com/Top-up-Charger-
tp3306953p3307724.html
Sent from the Electric Vehicle Discussion List mailing list archive at
Nabble.com.

_______________________________________________
| REPLYING: address your message to [email protected] only.
| Multiple-address or CCed messages may be rejected.
| UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
| OTHER HELP: http://evdl.org/help/
| OPTIONS: http://lists.sjsu.edu/mailman/listinfo/ev

_______________________________________________
| REPLYING: address your message to [email protected] only.
| Multiple-address or CCed messages may be rejected.
| UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
| OTHER HELP: http://evdl.org/help/
| OPTIONS: http://lists.sjsu.edu/mailman/listinfo/ev
 
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