Register Now

Kiba · 06-15-2015, 02:29 PM

I have 1 Pulse 7S 4500 45C pack for sale.

As with all my batteries it's always stored at 3.85V in a heavy ziplock bag in the refrigerator when I'm not actually flying it. I charge all my packs to 4.15V/cell also to prolong the life. It's always been flown with Jeti mah-based capacity telemetry and has never had more than 72% / 3250mah used in a flight. This pack has 41 cycles on it, has never even seen so much as a hard landing, and has an EC5 connector installed.

This particular pack has a slight self discharge issue with cell #1. All 7 cell IRs are nearly identical and once charged and balanced it will stay balanced, fly well, and come down after a flight with only 5-10mV imbalance between all 7 cells. It will stay like this over 3-4 cycles in a day. However, if you don't fly this pack for 1-2 weeks the voltage for cell #1 drifts down to 30-40mV lower than the other 6. This means for the first flight of the day it's not a good idea to parallel charge it with another pack and it needs to be charged and balanced by itself to bring the low cell back up. Once charged and balanced by itself on the first cycle of the day you can parallel charge it with other packs and there are no imbalance issues.

I got tired of having to be extra-careful with this pack by charging it individually because I usually parallel charge at the field so I bought a replacement when HD had their last sale.

Asking $70 shipped, please PM for contact.

Pic showing cell voltages after being in the fridge with no flying for 2 weeks, note cell #1 is low.

Pic showing cell voltages after first charge after 2 week storage-- no issues.

Pic showing cell IRs. Nothing odd seen on cell #1. The new pack I purchased to replace this one is about 1.8-2.0 mohm per cell IR on the same charger, so this pack still has like new IR values.

Pic showing cell voltages after a flight. As you can see they all come down good. As long as you're cycling this pack every couple of days it stays in balance, cell #1 only drifts down if you don't fly for a week or two.

Kiba · 06-27-2015, 04:51 PM

Bump. Added pics showing condition of pack.

Kiba · 06-29-2015, 10:20 AM

Bump!

Kiba · 07-06-2015, 10:12 AM

Bump.

Kiba · 07-08-2015, 12:35 PM

Bump!

Kiba · 07-10-2015, 09:53 AM

Bump.

Kiba · 07-13-2015, 09:45 AM

Bump!

Kiba · 07-14-2015, 02:05 PM

Bump.

Kiba · 07-18-2015, 02:55 PM

Bump!

Kiba · 07-20-2015, 09:26 AM

Bump. $65 shipped, isn't doing me any good sitting around here and I'd prefer not to dispose of it via a Viking funeral...

Kiba · 07-22-2015, 09:48 AM

Bump!

Kiba · 07-23-2015, 09:34 AM

SOLD 7/24

06-15-2015, 02:29 PM	#1 (permalink)
Kiba Registered Users Join Date: May 2009	Pulse 7S 4500 45C pack I have 1 Pulse 7S 4500 45C pack for sale. As with all my batteries it's always stored at 3.85V in a heavy ziplock bag in the refrigerator when I'm not actually flying it. I charge all my packs to 4.15V/cell also to prolong the life. It's always been flown with Jeti mah-based capacity telemetry and has never had more than 72% / 3250mah used in a flight. This pack has 41 cycles on it, has never even seen so much as a hard landing, and has an EC5 connector installed. This particular pack has a slight self discharge issue with cell #1. All 7 cell IRs are nearly identical and once charged and balanced it will stay balanced, fly well, and come down after a flight with only 5-10mV imbalance between all 7 cells. It will stay like this over 3-4 cycles in a day. However, if you don't fly this pack for 1-2 weeks the voltage for cell #1 drifts down to 30-40mV lower than the other 6. This means for the first flight of the day it's not a good idea to parallel charge it with another pack and it needs to be charged and balanced by itself to bring the low cell back up. Once charged and balanced by itself on the first cycle of the day you can parallel charge it with other packs and there are no imbalance issues. I got tired of having to be extra-careful with this pack by charging it individually because I usually parallel charge at the field so I bought a replacement when HD had their last sale. Asking $70 shipped, please PM for contact. Pic showing cell voltages after being in the fridge with no flying for 2 weeks, note cell #1 is low. Pic showing cell voltages after first charge after 2 week storage-- no issues. Pic showing cell IRs. Nothing odd seen on cell #1. The new pack I purchased to replace this one is about 1.8-2.0 mohm per cell IR on the same charger, so this pack still has like new IR values. Pic showing cell voltages after a flight. As you can see they all come down good. As long as you're cycling this pack every couple of days it stays in balance, cell #1 only drifts down if you don't fly for a week or two. Attached Thumbnails __________________ Minicopter Diabolo - BD Axon, Kosmik 200, Xnova XTS 4530-480, 14S 4500, BLS255HV/BLS256HV Bergen Magnum 44 - BD Axon, Wren MW44 turbine, BLS156HV/BLS256HV Jeti DC-16 Last edited by Kiba; 06-29-2015 at 10:23 AM..

06-27-2015, 04:51 PM	#2 (permalink)
Kiba Registered Users Thread Starter Join Date: May 2009	Bump. Added pics showing condition of pack. __________________ Minicopter Diabolo - BD Axon, Kosmik 200, Xnova XTS 4530-480, 14S 4500, BLS255HV/BLS256HV Bergen Magnum 44 - BD Axon, Wren MW44 turbine, BLS156HV/BLS256HV Jeti DC-16

06-29-2015, 10:20 AM	#3 (permalink)
Kiba Registered Users Thread Starter Join Date: May 2009	Bump! __________________ Minicopter Diabolo - BD Axon, Kosmik 200, Xnova XTS 4530-480, 14S 4500, BLS255HV/BLS256HV Bergen Magnum 44 - BD Axon, Wren MW44 turbine, BLS156HV/BLS256HV Jeti DC-16

07-06-2015, 10:12 AM	#4 (permalink)
Kiba Registered Users Thread Starter Join Date: May 2009	Bump. __________________ Minicopter Diabolo - BD Axon, Kosmik 200, Xnova XTS 4530-480, 14S 4500, BLS255HV/BLS256HV Bergen Magnum 44 - BD Axon, Wren MW44 turbine, BLS156HV/BLS256HV Jeti DC-16

07-08-2015, 12:35 PM	#5 (permalink)
Kiba Registered Users Thread Starter Join Date: May 2009	Bump! __________________ Minicopter Diabolo - BD Axon, Kosmik 200, Xnova XTS 4530-480, 14S 4500, BLS255HV/BLS256HV Bergen Magnum 44 - BD Axon, Wren MW44 turbine, BLS156HV/BLS256HV Jeti DC-16

07-10-2015, 09:53 AM	#6 (permalink)
Kiba Registered Users Thread Starter Join Date: May 2009	Bump. __________________ Minicopter Diabolo - BD Axon, Kosmik 200, Xnova XTS 4530-480, 14S 4500, BLS255HV/BLS256HV Bergen Magnum 44 - BD Axon, Wren MW44 turbine, BLS156HV/BLS256HV Jeti DC-16

07-13-2015, 09:45 AM	#7 (permalink)
Kiba Registered Users Thread Starter Join Date: May 2009	Bump! __________________ Minicopter Diabolo - BD Axon, Kosmik 200, Xnova XTS 4530-480, 14S 4500, BLS255HV/BLS256HV Bergen Magnum 44 - BD Axon, Wren MW44 turbine, BLS156HV/BLS256HV Jeti DC-16

07-14-2015, 02:05 PM	#8 (permalink)
Kiba Registered Users Thread Starter Join Date: May 2009	Bump. __________________ Minicopter Diabolo - BD Axon, Kosmik 200, Xnova XTS 4530-480, 14S 4500, BLS255HV/BLS256HV Bergen Magnum 44 - BD Axon, Wren MW44 turbine, BLS156HV/BLS256HV Jeti DC-16

07-18-2015, 02:55 PM	#9 (permalink)
Kiba Registered Users Thread Starter Join Date: May 2009	Bump! __________________ Minicopter Diabolo - BD Axon, Kosmik 200, Xnova XTS 4530-480, 14S 4500, BLS255HV/BLS256HV Bergen Magnum 44 - BD Axon, Wren MW44 turbine, BLS156HV/BLS256HV Jeti DC-16

07-20-2015, 09:26 AM	#10 (permalink)
Kiba Registered Users Thread Starter Join Date: May 2009	Bump. $65 shipped, isn't doing me any good sitting around here and I'd prefer not to dispose of it via a Viking funeral... __________________ Minicopter Diabolo - BD Axon, Kosmik 200, Xnova XTS 4530-480, 14S 4500, BLS255HV/BLS256HV Bergen Magnum 44 - BD Axon, Wren MW44 turbine, BLS156HV/BLS256HV Jeti DC-16

07-22-2015, 09:48 AM	#11 (permalink)
Kiba Registered Users Thread Starter Join Date: May 2009	Bump! __________________ Minicopter Diabolo - BD Axon, Kosmik 200, Xnova XTS 4530-480, 14S 4500, BLS255HV/BLS256HV Bergen Magnum 44 - BD Axon, Wren MW44 turbine, BLS156HV/BLS256HV Jeti DC-16

07-23-2015, 09:34 AM	#12 (permalink)
Kiba Registered Users Thread Starter Join Date: May 2009	SOLD 7/24 __________________ Minicopter Diabolo - BD Axon, Kosmik 200, Xnova XTS 4530-480, 14S 4500, BLS255HV/BLS256HV Bergen Magnum 44 - BD Axon, Wren MW44 turbine, BLS156HV/BLS256HV Jeti DC-16 Last edited by Kiba; 07-24-2015 at 09:28 AM..

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Register Now

Log-in