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Old 01-23-2013, 09:33 AM   #4
Chas Tennis
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Join Date: Feb 2011
Location: Baltimore, MD
Posts: 2,564
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Quote:
Originally Posted by Topspin_80 View Post
I had my ball machine for 2 and a half years now , I am going through the second battery and ready to get a new one .

The first battery , the original one , was an 18 AH lead acid , within 5 months playing time was half of what I was getting at the beginning , so I decided to get a new one with more capacity , I bought a Panasonic 22 AH also lead acid .

With the new battery I was getting 5 and a half hrs without any spin nor oscillation and with the standard speed of 60 mph , since I play with plenty spin and with two line or any of the pre-programmed drills , a little over 4 hrs was all I used to get .

Now after 2 years , playing time has dropped dramatically to about 90' , this is not enough for me , therefore I am buying a new one .

I can not buy a bigger size because it wouldn't fit inside the machine so I can only go for bigger capacity .

I was going to buy a silicone lead greensaver 24AH , but then I saw a lithium battery twice as expensive as the green saver , I started doing some research , and apparently , I say apparently because I am not an expert on batteries and I can get lost with the specifications , it can give you much more running time .

Does anyone have experience with Lithium Iron Phosphate batteries ???

Any input would be much appreciated
A friend of mine had a Tennis Tudor with a lead acid battery. He replaced the battery with two white plastic battery holder tubes that had 3 or 4 rechargeable D cells in each tube. I assume that they were Lithium batteries. They were very reasonable in cost.

I burrowed the machine. Although I did not do long hitting secessions I found the performance to be very satisfactory for running the machine. They are much lighter than a lead acid battery. I guess that you could analyze running time using amp-hours.

The machine manufacturers should research using them instead of lead acid.

I posted the details in this forum I believe but did not find searching so far.

Last edited by Chas Tennis : 01-23-2013 at 09:40 AM.
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