Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
frontpageRed_Liz | Staff posted Yesterday 06:57 PM
  1. Deal Image
Item 1 of 7
  1. Deal Image
  2. Deal Image
  3. Deal Image
  4. Deal Image
Item 1 of 7
frontpageRed_Liz | Staff posted Yesterday 06:57 PM

Prime Members: 4-Pack HW 9 Volt 1400mAh Rechargeable Lithium Batteries

+ Free S&H

$13

$33

60% off
Amazon
17 Comments 6,499 Views
Get Deal at Amazon
Good Deal
Save
Share
Deal Details
TIGER HEAD HI WATT BATTERY HK CO LTD via Amazon has for Prime Members: 4-Pack HW 9 Volt 1400mAh Rechargeable Lithium Batteries on sale for $19.99 - 35% with promo code 38PSK6NZ at checkout = $12.99. Shipping is free.

Thanks to Staff Member Red_Liz for sharing this deal.
  • Note: You must be logged in to clip coupons or apply promo codes. Coupons/Promo codes are typically single-use, may vary by account or may need to be re-applied in order to discount properly.
Details:
  • Capacity & Runtime: Upgraded 1400mAh rechargeable 9V lithium batteries; longer runtime than standard alkaline, NiMH, or regular lithium batteries; consistent, reliable power output
  • Charging: Built-in USB-C port; includes 4-in-1 charging cable; no separate charger required; LED indicator displays charging status
  • Safety Features: Multiple protections against overcharge, over-temperature, overload, and short-circuit
  • Eco & Cost Benefits: Up to 1000 recharge cycles; low self-discharge; constant voltage output; reduces waste and long-term costs
  • Compatibility: Suitable for smoke detectors, fire alarms, digital cameras, walkie-talkies, toys, game controllers, GPS units, clocks, security devices, and medical equipment

Editor's Notes

Written by SaltyOne | Staff

Original Post

Written by Red_Liz | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
TIGER HEAD HI WATT BATTERY HK CO LTD via Amazon has for Prime Members: 4-Pack HW 9 Volt 1400mAh Rechargeable Lithium Batteries on sale for $19.99 - 35% with promo code 38PSK6NZ at checkout = $12.99. Shipping is free.

Thanks to Staff Member Red_Liz for sharing this deal.
  • Note: You must be logged in to clip coupons or apply promo codes. Coupons/Promo codes are typically single-use, may vary by account or may need to be re-applied in order to discount properly.
Details:
  • Capacity & Runtime: Upgraded 1400mAh rechargeable 9V lithium batteries; longer runtime than standard alkaline, NiMH, or regular lithium batteries; consistent, reliable power output
  • Charging: Built-in USB-C port; includes 4-in-1 charging cable; no separate charger required; LED indicator displays charging status
  • Safety Features: Multiple protections against overcharge, over-temperature, overload, and short-circuit
  • Eco & Cost Benefits: Up to 1000 recharge cycles; low self-discharge; constant voltage output; reduces waste and long-term costs
  • Compatibility: Suitable for smoke detectors, fire alarms, digital cameras, walkie-talkies, toys, game controllers, GPS units, clocks, security devices, and medical equipment

Editor's Notes

Written by SaltyOne | Staff

Original Post

Written by Red_Liz | Staff

Community Voting

Deal Score
+23
Good Deal
Get Deal at Amazon

Leave a Comment

Unregistered (You)

17 Comments

Sign up for a Slickdeals account to remove this ad.

Yesterday 07:55 PM
479 Posts
Joined Jan 2009
tooslickYesterday 07:55 PM
479 Posts
Code does work with S&S. Before tax about $12
Yesterday 08:23 PM
695 Posts
Joined Oct 2011
puffcorn221Yesterday 08:23 PM
695 Posts
Beep*
7
Yesterday 08:58 PM
98 Posts
Joined Nov 2021
BasecallYesterday 08:58 PM
98 Posts
Never even knew something like this existed. Nice post
Yesterday 09:57 PM
23 Posts
Joined Oct 2005
mcdz71Yesterday 09:57 PM
23 Posts
any use these in smoke alarms?
1
Pro
Yesterday 10:08 PM
2,284 Posts
Joined Apr 2006
dantheman9703
Pro
Yesterday 10:08 PM
2,284 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.
Yesterday 10:24 PM
471 Posts
Joined Mar 2016
harley48Yesterday 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
Yesterday 10:34 PM
537 Posts
Joined Jul 2019
Hubbs1
Pro
Yesterday 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.
1

Sign up for a Slickdeals account to remove this ad.

Pro
Yesterday 10:54 PM
767 Posts
Joined Feb 2015
bearstampede
Pro
Yesterday 10:54 PM
767 Posts
Quote from Hubbs1 :
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.
Not to mention the inconvenience of dying in a fire.
2
Yesterday 11:14 PM
208 Posts
Joined Sep 2014
peekpokeYesterday 11:14 PM
208 Posts
I use these as battery backup in some LED clocks. They lose their time each time we get a blackout, huge pain. Also put one into a gas detector alarm that is normally AC powered but complains with beeps if the 9V gets weak.
Now with another 4 I will have spares that stay charged.
Today 12:22 AM
1,424 Posts
Joined Jun 2022
ibuythingshereToday 12:22 AM
1,424 Posts
Quote from bearstampede :
Not to mention the inconvenience of dying in a fire.
just a small inconvenience
1
Today 02:35 AM
299 Posts
Joined May 2017
jaxfatToday 02:35 AM
299 Posts
You can pass these out to your friends, you know which ones.
1
2
1
Today 02:56 AM
114 Posts
Joined Aug 2018
ElGeFeToday 02:56 AM
114 Posts
I was just thinking of picking up some rechargeable 9V batteries for my ThermoWorks TimeStack timer. It's not a critical device, so no harm if they don't last.
Today 03:41 AM
1,406 Posts
Joined Aug 2005
desidude2000Today 03:41 AM
1,406 Posts
Quote from ibuythingshere :
just a small inconvenience
Promise you, last one ever.
1
Today 04:00 AM
15,465 Posts
Joined Jan 2010
Ride_The_SkyToday 04:00 AM
15,465 Posts
Quote from mcdz71 :
any use these in smoke alarms?
Can you even change batteries in new ones. They are now sealed and they pretty much expire in 10 years, really weird thst this is new trend, a lot of plastic waste, a lot of malfunction. I had to get warranty replacement and they are not cheap. Smoke and Carbon Monoxide detectors are expensive.. They said maybe I didn't clean it enough regularly that's why it malfunctioned... didn't clean it enough.. what?

Sign up for a Slickdeals account to remove this ad.

Today 04:09 AM
2,364 Posts
Joined Nov 2018
IndigoWinter2667Today 04:09 AM
2,364 Posts
Quote from Ride_The_Sky :
Can you even change batteries in new ones. They are now sealed and they pretty much expire in 10 years, really weird thst this is new trend, a lot of plastic waste, a lot of malfunction. I had to get warranty replacement and they are not cheap. Smoke and Carbon Monoxide detectors are expensive.. They said maybe I didn't clean it enough regularly that's why it malfunctioned... didn't clean it enough.. what?
They still sell/use "normal" ones. I have them in my house which was built recently.
People like the sealed ones because they dont have to change batteries, and if one goes off due to, say, cooking, then they dont network and trigger them all.

Leave a Comment

Unregistered (You)

Related Searches

Home & Home ImprovementTech & ElectronicsTech AccessoriesBatteriesAmazon

Popular Deals

See All
Found by jk6812
Today 01:26 AM
Forum Thread
Raidou Remastered: The Mystery of the Soulless Army (NS/NS2/PS5) $29.99 + Free Shipping w/ Prime or on $35+$30$50
40% off
0
Found by phoinix
Today 07:58 AM
Forum Thread
[Prime] $6.99* | Addtam 6-Outlet 15A Outlet Extender w/ 1800J Surge at Amazon$6.99$12
41% off
1
Found by phoinix
Mar 19, 2026 02:57 PM
Forum Thread
$24.54 | Gerber Gear EXO-MOD Caper Fixed Hunting Knife, Black (31-003920) at Amazon$25$30
16% off
0
Found by babgaly
Yesterday 04:00 PM
Forum Thread
4-Pack CAMPSNAIL 8" Women's High Waist Athletic Biker Shorts $10.72 + Free Shipping w/ Prime or on $35+$11$30
63% off
0
Found by pennysave
Today 05:43 AM
Forum Thread
$7.99*:ToughBuilt 3-Piece Fastener Bags, Heavy-Duty 1680D Fabric with Reinforced Handles at Woot!$7.99$18
55% off
1

Trending Deals

See All
Found by phoinix
Today 07:34 AM
Forum Thread
$8.99 | The Wild Robot: Collector's Edition (Blu-ray + Digital HD) at Amazon$8.99$15
40% off
0
Found by Taco_Doomsday
Today 08:01 AM
Forum Thread
DEWALT, DCPR320B, Cordless Pruner $89$89$129
31% off
1
Found by pennysave
Today 07:05 AM
Forum Thread
$44*:Nintendo eShop $50 Gift Card (Email Delivery) at Newegg$44$50
12% off
1
Found by phoinix
Today 07:41 AM
Forum Thread
$5* | 12-Pk 12-oz Canada Dry Strawberry Fruit Splash Zero Sugar Ginger Ale at Amazon$5.00$7.59
34% off
1
Found by Taco_Doomsday
Today 08:11 AM
Forum Thread
DEWALT, DCBL772X1, 60V FLexvolt Leaf Blower Kit with 3Ah Flexvolt battery and charger $219$219$329
33% off
1