ZIPPY Compact 4200mAh 4S2P 30C LiFePo4 Pack

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Works Great

Oct 05, 2022

Got this to use on my motorcycle. Will see how it does long term but so far has been perfect.

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Does not balance well

May 08, 2022

Cell 4 voltage is always much higher than the other 3. Takes forever to charge because it goes into balance mode for a long time. Has good overall power and cells discharge together for the most part. Cell 4 will be lower after discharged and reaches peak before others when charging.

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Battery won;t charge after 2 uses - but only 30 day warranty

Jul 03, 2021

I bought the battery to replace one similar that I'd had for five years. It's used to power a radio and only used occasionally.
After the second use (on neither occasion was the battery depleted) the battery failed to charge as the imbalance between the cells was too great (> 0.25V).
Great! Batteries only have a 30 day warranty, so I'm stuck with a failing battery and out of pocket to the sum of £36.00
NOT HAPPY

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Excellent for SOTA activations

Apr 27, 2021

I recently obtained two of these, replacing my 3S LiPos that I had been using. These are much better - they maintain ~13v for a long time, easily powering my FT-818 for multiple SOTA activations. Staying at ~13v means the FT-818 puts out 6w, whereas with the LiPos, I found it would keep dropping to 2.5w.
I also use these for powering a 35w amplifier and/or a 90w invertor to run my laptop when I'm using digital modes/SSTV. Again, the battery easily runs these devices for a good few hours.
They seem to cope well with cold weather too - certainly more reliable than my LiPos.
Another bonus is the Wh rating is well below the 100Wh limit many airlines have, so these can be taken in cabin baggage - ideal for holiday SOTA activations.
Always good service from HobbyKing - I've used them a few times now and delivery has been quick, items well packed, good prices.

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great alternative to 3S LIPO

Apr 03, 2021

feels like 3S LIHV but not so sensible in handling

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Easy ecxhange with LeadAcid battery

Sep 28, 2020

Easy ecxhange from LeadAcid battery, same charge voltage, just check that charge current is under rated charge current.

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Excellent power source.

Jul 29, 2020

An excellent source of 12V for portable ham radio operation. However, it’s expensive, and even more expensive if you import it from Hong Kong - the courier has to charge import duty which adds nearly £20. Try to specify a warehouse in Europe!

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Easy ecxhange with LeadAcid battery, same charge

Jul 23, 2020

Good battery, Easy ecxhange with LeadAcid battery, same charge, only 0,5 kg

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lifepo4 battery

Dec 09, 2019

battery was exactly as i hoped, superlight and lasts for a good time