12V li-ion battery on LX-7 or Lx-9?

I have a 12V 13AH Li-ion Polymer Battery that works great on my old LX-5. The thing about this battery is that its working range is 10.8V-12.6V. The battery monitor on the Lx-5 will show 0% after about 6 hours of use(When the battery dropped to 11.9V) . After that, the LX-5 kept working for 10+ hours until the battery dropped to around 11V.

Now I am thinking about upgrading to a LX-7 or LX-9.

Here is my question, will the LCD on Lx-7 or Lx-9 function properly when the battery drops to 11V-12V?

BTW, The Li-ion battery I have only weighs around 1.5lbs. Cost me about $50. I got it when USPS still shipped Li-ion battery. I think they don’t do it anymore.

The 7 and 9 give a real voltmeter so it should work until it is dead. Instead of 100%, 75%, 50% etc… it says 12.6v, 12.4v, 12.1v, etc.

Thanks. Your picture shows that Lx-7 will read a battery that’s 9V or higer, that’s definitely good news for me.

Do you like the lithium battery? I’m going to run lithium on my flasher this year. The little pocket sized 7ah ones. 7oz each vs near 4lbs for a 7ah SLA. I can carry a spare in back of my marcum and have one hooked up for a total of 14ah of power and less than 1lb of weight. Hopefully they work well.

where are you guys getting these battery’s? im interested!

I do like the Li-ion Battery. It’s much lighter than the 9ah gel cell battery on my lx-5, which is around 5 lbs.
I bought it from an Ebay equivalent website in China. The thing with li-ion batteries in China is that 90% of batteries don’t have their claimed capacity. Some only have about 50% of marked capacity. I have to spend hours on the Internet, chatting with the sellers to get the one that has at least 90% of their claimed capacity.
BTW, those li-ion batteries on Ebay are also made in China, Most of them have the same capacity issue.

If you have a li-ion battery and want to use it on your flasher. I strongly suggest you test it at home before you head out on the ice. Without testing it first, You won’t know if the actual AH number of the battery matches the number on its label.

Where are you getting the li-ion batteries??

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Where are you getting the li-ion batteries??

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Ebay has gazilions of them for sale. Take your pick. Do know that the amp ratings offered by the overseas suppliers are often extremely generous.

12 Volt Lithium ion Batteries on Ebay

I totally agree with James. Some of these li-ion batteries only have about 50% of their claimed amps.

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I totally agree with James. Some of these li-ion batteries only have about 50% of their claimed amps.

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And some of the ones I’ve tested don’t do well in extreme cold. So there’s some drawbacks, or can be. But the weight savings is very noticeable.

One of the sellers told me that the li-ion batteries work at -4 fahrenheit or higer. Not sure if it’s true.

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One of the sellers told me that the li-ion batteries work at -4 fahrenheit or higer. Not sure if it’s true.

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I guess I haven’t been able to pinpoint a certain temp when a lithium battery goes ka-put but I’ve noticed severely shortened run times when temps were frigid when compared to temps on the plus side of 20 degrees or so.

Someone will get it figured out and the days of the gel cell will be behind us. Some batteries seem to cope with severe cold better than others so it appears there’s tweaks to design and/or chemistry that can improve cold weather performance.

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One of the sellers told me that the li-ion batteries work at -4 fahrenheit or higer. Not sure if it’s true.

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I guess I haven’t been able to pinpoint a certain temp when a lithium battery goes ka-put but I’ve noticed severely shortened run times when temps were frigid when compared to temps on the plus side of 20 degrees or so.

Someone will get it figured out and the days of the gel cell will be behind us. Some batteries seem to cope with severe cold better than others so it appears there’s tweaks to design and/or chemistry that can improve cold weather performance.

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I think I am with you on this. While I welcome the advances in technology to bring us weight savings and increased performance, i certainly don’t wanna be the guinea pig 200+ miles from home that has a trip ruined over trying to save 5 pounds of carry-weight.