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I have a new supply of Boston Power Batteries and various types of pack building options. I also have some already built battery packs. I have both the Boston Power Swing 5300 and Boston Power Swing 4400. Here are links to specs for the 4400 and 5300:
http://liionbms.com/pdf/bostonpower/swing4400.pdf
http://liionbms.com/pdf/bostonpower/swing5300.pdf

The first axample that might be special here could be a 8p7s 24V 35AH built with Boston Power Swing 4400 batteries. These are the second highest C rated batteries from Boston power. ALL BATTERIES I OFFER ARE NEW NEVER USED. The assembled packs are built very well, with spot welds and good assembly holders and busbars with wire connection lugs. These packs do not have a BMS. The price is $270 when purchased off this forum. This includes shipping in the U.S. International shipping will be extra. Ask and we can discuss that. I will attach JTS hobby balance connectors to these packs before they ship. See the attached pictures. I have 35 of these packs currently and when they are gone there will be no more. Here are some pictures:
8P7s Boston Power 4400 #1.jpg
8P7s Boston Power 4400 #2.jpg
8P7s Boston Power 4400 #3.jpg
8P7s Boston Power 4400 #4.jpg
8P7s Boston Power 4400 #5.jpg


The next pack that may be of interest here is a 4p14s 48V 17.6AH built with Boston Power Swing 4400 batteries. Again, these are the second highest C rated batteries from Boston power. ALL BATTERIES I OFFER ARE NEW NEVER USED. The assembled packs are built very well, with spot welds and good assembly holders. The 4P14S packs have balance connectors (molex microclasp), thermistors for temperature and busbars with lugs for wire connectors. They do not have a BMS. The 4P14s pack is priced at $265 which includes shipping to the lower 48 U.S. Shipping International and to Hawaii, Alaska or U.S. territories will be more. Ask and we can discuss this. I only have (6) of these packs available. See the attached pictures. I have more pictures if you need them.
4p14s Boston Power 4400 #1.jpg
4p14s Boston Power 4400 #2.jpg

Available are several different holder options for building your own packs based on Boston Power batteries. Here is another example. This is a complete pack for a 6P7S battery. The price with Boston Swing 4400 batteries on this forum is $225.
Boston Power 6P7S weld tabs.jpg
6P7S Boston power holders #7.jpg



So as not to bog this forum down with a lot of listings, I am going to put links here to several of my listings on Ebay. Check these out to see if something is of interest. THEN CONTACT ME HERE AND NOT ON EBAY AND WE CAN ARRANGE A PURCHASE WITH A 10% DISCOUNT COMPARED TO PRICES ON EBAY.

Some of my listings on Ebay:
https://www.ebay.com/itm/233092189511
https://www.ebay.com/itm/233090929412
https://www.ebay.com/itm/233097166074
https://www.ebay.com/itm/233090975290

There are a lot more configurations including individual batteries. Just view "See other items" on any of those listings and you will find them.

Send me a PM on this forum regarding what you are interested in. DO NOT MESSAGE ABOUT THIS FORUM ON EBAY REGARDING THE DISCOUNTS I AM OFFERING HERE. EBAY MONITORS MESSAGING AND I COULD HAVE MY ACCOUNT CLOSED.

ALL MY PRICING INCLUDES PAYPAL AND SHIPPING WHICH IS MY PREFERRED METHOD OF PAYMENT.

AGAIN ALL OF THESE BATTERIES ARE NEW NOS. THE BOSTON POWER SWING 4400 HAS A HIGHER C RATE THAN THE BOSTON POWER SONATA 4400 AND IF YOU WANT THE BOSTON POWER SWING 5300 WITH THE HIGHEST C RATING I HAVE SOME OF THOSE TOO.
 
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