By the way....what amp does everyone charge theirs at?
By the way....what amp does everyone charge theirs at?
32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was
Now you mention it, I did notice that the motor/esc were cool, more so than normal, it was hard to detect any warmth in them and the batts were just warm to touch.
I pretty much always charge at 5 AH.
NZMPBA 2013, 2016 Open Electric Champion. NZMPBA 2016 P Offshore Champion.
2016 SUHA Q Sport Hydro Hi Points Champion.
BOPMPBC Open Mono, Open Electric Champion.
See the danger. THEN DO IT ANYWAY!!!
https://forums.offshoreelectrics.com/...hp?albumid=319
https://forums.offshoreelectrics.com/...hp?albumid=320
Ordered another pair yesterday. That replaces all my 2s turnigys that have crapped out, well to be fair they have had a hard 2-3 years!
NZMPBA 2013, 2016 Open Electric Champion. NZMPBA 2016 P Offshore Champion.
2016 SUHA Q Sport Hydro Hi Points Champion.
BOPMPBC Open Mono, Open Electric Champion.
I like to charge my batts always 10% lower than their capacity......they've been lasting good after three years.Gill
GO FAST AND TURN RIGHT !
www.grsboats.com.br
Here are the current AMPBA rulings.. Ive made BOLD the important bits for this topic
2. PROPULSION BATTERY CLASSIFICATIONS
a. EA: The battery shall have:
i. up to 12 NiMH cells; or up to 4 LiPo cells (maximum battery weight of 650g)
ii. a maximum nominal voltage of 14.8V.
b. EB: The battery shall have:
i. 13 - 18 NiMH cells; or 5 - 6 LiPo cells (maximum battery weight of 960g)
ii. a maximum nominal voltage of 22.2V.
c. EC: The battery shall have:
i. 19 - 36 NiMH cells, or 7 - 12 LiPo cells (maximum battery weight of 1,950g)
ii. a maximum nominal voltage of 44.4V.
March 2011: FE Sub committee
Safety Statement
19 March 2011 Revision#3:
Sanctioned event, Club Race or Practice at AMPBA venues.
Electric: Safety
1. An externally fitted safety loop must be fitted which physically
disconnects battery from esc. One loop per esc is allowed An orange or
blue triangle ( >15mm sides) will visibly indicate this location.
2. The hatch/cover is not to be removed until safety loop is disconnected.
3. Electric class driver must remain on stand 'in control' until safety loop
disconnected [ usually as their boat is retrieved from water end of run or
during rescue ]
4. A returned boat must have the safety loop disconnected before removed
from launch/retrieval area
Rescue team:
1. Safety loop must be removed as boat is retrieved from water.
2. If a boat has uncontrolled movement , assess risk and act within the
following guidelines.
If safe to collect from water, do so and remove safety loop.
If not safe to collect from water, attempt safety loop removal via
rod or pole or paddle.
Safety is paramount, if the boat is deemed too dangerous for
rescue, protect the team and abandon rescue.
In cases where the boat is an unmitigated hazard , safely dispose of
the boat with whatever means available. Submerge with
pole/paddle guide away from shoreline ensure other water
users are aware the hazard.
Smoke fire etc ..
Li(xx) batteries can self combust if overcharged/overheated.
Cooling the battery is the best option to slow ignition.
During rescue the boat is to be treated as an uncontrolled boat.
If already in pits/shore areas, promptly notify all to evacuate the
area only that pit crew and safety crew are able to remain.
Removing safety loop may eliminate the cause, but not eliminate
the source
Quickly assess source and disable where possible.
Placing a smoking Li(xx) into a charge sack is an appropriate
measure.
If Li(xx) source not removable, cover with fire blanket or
submerge into water.
If fire exists, use fire extinguisher and/or cover source with
water/soil
Charging :
An appropriately manufactured and labeled LiSafe sack must be
used at all times.
An appropriate Lithium chemistry profiled charger must be used.
Batteries must be near air temp prior to charge.
Batteries must be balance charged.
Maximum charge rate must not exceed manufacturer s ratings.
Maximum LithiumPolymer cell voltage must not exceed 4.2V per
cell..
Charging must not be unattended. One person may monitor many
charging packs within close proximity.
Additionally ... Australian rules have a 162.5gram per cell weight limit
so for eg 6S is 950gram maximum
I note that Revolectrix are 1100grams for 6S70C5500mAH.
http://www.store.revolectrix.com/Fea...0C-SILHV-label
But for the thousands of people in Au who dont race under AMPBA rules .. all good
regs
W
Last edited by drwayne; 10-18-2014 at 09:30 AM.
Wayne Schutte PhdCSE BaSE BaEE. Australian, & damn proud of it YOUTUBE
@ 36" H&M Maritmo twin1512/1800 6S1P 88mph @ 40" drag hydro#1 twin 5692 12S1P .....always for fun @
Yep. That addendum to the rule was pointed out to me after that post. So they are fine at 4.2V. Which is all I ever did on the couple of occasions that I used them.
The 6s packs are actually 850g on the top line of the description next to the physical dimensions. I think you are reading the Shipping weight. Mine weigh 872g with connectors added. So weight is not a problem with any of the packs.
Paul.
See the danger. THEN DO IT ANYWAY!!!
https://forums.offshoreelectrics.com/...hp?albumid=319
https://forums.offshoreelectrics.com/...hp?albumid=320
Wayne Schutte PhdCSE BaSE BaEE. Australian, & damn proud of it YOUTUBE
@ 36" H&M Maritmo twin1512/1800 6S1P 88mph @ 40" drag hydro#1 twin 5692 12S1P .....always for fun @
I typically charge everything at 10 amps, then on race day ill charge between 15-20 amps if i need to recharge something. I have batteries that are close to 5 years old with hundreds of cycles and most packs still are under 2milliohm per cell IR and balance out perfectly, especially my hyperion 5000's and 6500's
We call ourselves the "Q"
NZMPBA 2013, 2016 Open Electric Champion. NZMPBA 2016 P Offshore Champion.
2016 SUHA Q Sport Hydro Hi Points Champion.
BOPMPBC Open Mono, Open Electric Champion.
My 6s packs will be here by Friday and Sunday I will test. I know exactly what the boat does so this will be interesting to find out if they perform like they have been talked about. Will let you guys know Sunday night hopefully.
Keep us posted bro!
.NAMBA20...Caterpillar UL-1, P-Spec OM29, P-Mono DF33, P-Spec JAE, Aussie 33" Hydro-LSH, Sprintcat CC2028 on 8s, PT SS45 Q Hydro, PS295 UL-1 power, OSE Brothers Outlaw QMono 4-sale, Rio 51z CC2028 on 8s
I already know what the outcome will be.......
32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was
MODEL BOAT RACER
IMPBA President
District 13 Director 2011- present
IMPBA National Records Director 2009-2019
IMPBA 19887L CD
NAMBA 1169
Will these HV batteries work with the hobbywing 180 amp ESC or is a HV esc required?
My old thrashed turnigy blue packs are reading 7 mO. They also suffer badly from voltage drops triggering lvc, hence getting new revo's. I just have to go through the disposal process with the turnigys now.
NZMPBA 2013, 2016 Open Electric Champion. NZMPBA 2016 P Offshore Champion.
2016 SUHA Q Sport Hydro Hi Points Champion.
BOPMPBC Open Mono, Open Electric Champion.
I'm using Hyperion 615s and 720s
I don't disagree that IR readings are not completely synonymous with higher quality.
I'm also certain that stated high capacity cells with high IR are worthless in high power set ups. As worthless as low IR cells lacking capacity. It doesn't matter what the capacity is if you can't deliver it.
The vast majority of my batteries are Hyperion. As Mike stated 100s of cycles over several years and low IRs. Under 2m.
2,3,4,5s packs 5-5500 35c and 5-6500 45c. Should have never swayed but whatever.
LNE 6000 65c, and the Revo 5000 70c? (Who really knows right? I don't believe that was ever cleared up.)
The IR on the LNEs according to my equipment started around 3m and are upwards of 8m now IIRC.
6-6000 65c, 2 with 8ga wire. 2 that I removed approx. 14" of wire from. Also have two 4s 5000s. One is trying to puff.
The Revos started at 3m and measured 7m at last charge cycle.
All of these packs are less than 6 months old and have less than 50 cycles on them.
I'm sure they are both great batteries. I just got some out of a less that stellar lot. It happens and I'm sure someone has similar Hyperion stories.
FWIW
DuhG
MODEL BOAT RACER
IMPBA President
District 13 Director 2011- present
IMPBA National Records Director 2009-2019
IMPBA 19887L CD
NAMBA 1169
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