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popularRed_Liz | Staff posted Today 06:57 PM
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popularRed_Liz | Staff posted Today 06:57 PM

Prime Members: HW 4-Pack 9V 1400mAh USB-C Rechargeable Lithium Batteries w/ Cable $12.99 + Free Shipping $13

$13

$33

60% off
Amazon
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TIGER HEAD HI WATT BATTERY HK CO LTD via Amazon [amazon.com] has for Prime Members: HW 4-Pack 9V 1400mAh USB-C Rechargeable Lithium Batteries w/ Cable on sale for $19.99 - 35% off w/ code 38PSK6NZ at checkout = $12.99. Shipping is free.

Note: Promo codes are typically for one-time use and don't always apply seamlessly. If you run into this issue, refresh the page, re-enter the code, or revisit the cart page.
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About the Poster
TIGER HEAD HI WATT BATTERY HK CO LTD via Amazon [amazon.com] has for Prime Members: HW 4-Pack 9V 1400mAh USB-C Rechargeable Lithium Batteries w/ Cable on sale for $19.99 - 35% off w/ code 38PSK6NZ at checkout = $12.99. Shipping is free.

Note: Promo codes are typically for one-time use and don't always apply seamlessly. If you run into this issue, refresh the page, re-enter the code, or revisit the cart page.

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Today 07:55 PM
478 Posts
Joined Jan 2009
tooslickToday 07:55 PM
478 Posts
Code does work with S&S. Before tax about $12
Today 08:23 PM
694 Posts
Joined Oct 2011
puffcorn221Today 08:23 PM
694 Posts
Beep*
3
Today 08:58 PM
98 Posts
Joined Nov 2021
BasecallToday 08:58 PM
98 Posts
Never even knew something like this existed. Nice post
Today 09:57 PM
23 Posts
Joined Oct 2005
mcdz71Today 09:57 PM
23 Posts
any use these in smoke alarms?
1
Pro
Today 10:08 PM
2,283 Posts
Joined Apr 2006
dantheman9703
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Today 10:08 PM
2,283 Posts
Quote from mcdz71 :
any use these in smoke alarms?
Definitely don't recommend with low quality lithium cells. There's always chance they randomly drain too quickly to output the amps required for the alarm to recognize a low battery to warn you. Better off with dollar store 2 for $1.25
Last edited by dantheman9703 March 20, 2026 at 03:26 PM.
Today 10:24 PM
471 Posts
Joined Mar 2016
harley48Today 10:24 PM
471 Posts
These keep coming up. They appear by some test reports to be ~400mAh. Not 1400 and not great by WAY better than NiMh 9v.
I use mine in smoke alarms and digital volt meters, but mine are (tested) 500-600, AND I change them out every 6 months.
Pro
Today 10:34 PM
537 Posts
Joined Jul 2019
Hubbs1
Pro
Today 10:34 PM
537 Posts
Quote from mcdz71 :
any use these in smoke alarms?
I worked at a smoke alarm company for many years and have seen a lot of tragedy from fires. I wouldn't recommend straying from a standard name brand battery. They are pricy up front but if you're going to stay in your place for a while they make sealed units with 10 year batteries (smoke alarm's have a 10 year life) so once a decade you replace the entire alarm but avoid the cost and hassle of batteries.

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