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 Home > Cases, Adapters & Testers > Battery Cases, Adapters & Testers

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Battery Rack Organizer for 82 Batteries with Battery Tester

Price: USD 30.99
Qty:  

Battery Rack Organizer for 66 Batteries with Battery Tester

Price: USD 27.99
Qty:  

Battery Rack Organizer for 40 Batteries with BatteryTester

Price: USD 24.99
Qty:  

Universal Battery Tester for more than 12 Types of Batteries

Price: USD 21.99
Qty:  

Digital Multimeter - Multi Function

Price: USD 19.99
Qty:  

Eneloop Battery Case Organizer for AA / AAA / C and D Batteries

Price: USD 6.99
Qty:  

12VDC Car Cigarette Charger plug (5.5 x 2.5mm barrel male)

Price: USD 6.99
Qty:  

Battery Tester for AA / AAA / C / D Batteries

Price: USD 6.99
Qty:  

IPowerUS AA & AAA Battery Cases

Price: USD 1.69
Qty:  

Spacers for 6 Slot Li-ion Smart Charger

Price: USD 1.39
Qty:  

Sony AA & AAA Battery Cases

Price: USD 1.29
Qty:  

Sony AA & AAA Battery Cases

Price: USD 1.29
Qty:  

2 x D Size Battery Adapters from 1 AA Battery

Price: USD 3.99
Qty:  

2 x C Size Battery Adapters from 1 AA Battery

Price: USD 3.89
Qty:  

4 Pack Maxell D Size Battery Adapters from 1 AA Battery

Price: USD 9.99
Qty:  

4 Pack Maxell C Size Battery Adapters from 1 AA Battery

Price: USD 8.99
Qty:  

4 x D Size Battery Adapters from 1 AA Battery

Price: USD 7.59
Qty:  

4 x C Size Battery Adapters from 1 AA Battery

Price: USD 7.29
Qty:  

8 x D Size Battery Adapters from 1 AA Battery

Price: USD 14.49
Qty:  

8 x C Size Battery Adapters from 1 AA Battery

Price: USD 12.59
Qty:  

12 x D Size Battery Adapters from 1 AA Battery

Price: USD 20.59
Qty:  

12 x C Size Battery Adapters from 1 AA Battery

Price: USD 19.29
Qty:  

16 x D Size Battery Adapters from 1 AA Battery

Price: USD 25.69
Qty:  

16 x C Size Battery Adapters from 1 AA Battery

Price: USD 23.99
Qty:  

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Battery Cases, Battery Racks/Organizers and Battery Testers

If you use batteries, perhaps you want to check out some of our products that go with them like hand-in-glove, here.

At MEGAbatteries.com, we take care of all your battery and battery-related product needs. If it’s your first time here, welcome! Have a look around: Here’s our index.

If you’re a return visitor, we’re very glad to have you back. There are many new items to see. Have you seen our daily specials in a while? You should probably bookmark that section of our website for easy access in the future!

Whether you use Alkaline or Lithium (non rechargeable) batteries, or NiMH and NiCD rechargeable batteries, you can benefit from related products to test, organize, store, transport and even change them! Well, when we say, we mean, “adapt”. Read on to discover what we mean….

First, we’ll describe our Battery Adapters.

Battery Adapters convert small batteries into larger ones. Well, when we say convert, we mean their size. No longer do you need to own batteries in all sizes, if you only use a couple of sizes in total. Battery Adapters will allow you to power your battery-operated devices if the batteries you own are too little to fit into battery compartment. They’re really a truly practical solution!

So as you can see, you need never again be out of luck, in operating an old radio or CD player that needs c or d batteries if you have aa or aaa batteries and battery adapters. Get some at the top of this page! You only have to buy them once and you’re good to go from then on!

Here We Cover Battery Cases

Many people have cluttered work spaces, work-shops, and offices. Their briefcases and knapsacks might look as though they’ve been ransacked! Yikes! It’s battery cases to the rescue! They’ll keep your batteries from rolling off the tabletop, keep them from hiding under paperwork in your drawer or briefcase and are just plain sensible to use to store and protect your batteries. We have cases for so many other things in our lives. Why not for our batteries too?

Does your workshop have loose batteries in it, sometimes rolling off the table?

Battery Racks Rock!

No matter how many or how few batteries have, a battery rack will house all your batteries neatly and out of the way from where you actually live and work. Most batteries are cylindrical and roll around if not held in place. Always have your AA, AAA, AAAA, C, D and 9 Volt batteries front-facing, neatly placed in battery rack and always know where to find them!

Now We Get to Battery Testers

As we mentioned, regardless of the chemistry of your batteries or if they are rechargeable or not, battery testers have been around for a long time and serve an extremely useful purpose, namely, that they test the power of batteries. If you are ever unsure about what power remains in any of your batteries, it’s a battery tester that will tell you. Suppose you’re planning a trip to the beach for the whole day and of course, what’s a day at the beach without a portable radio. Everyone gathers around it listening to songs as they tan on a gigantic beach blanket. Well, the batteries required for that radio are likely C’s or D’s. And you’d want to know they are charged full before you head out for the day. That’s just one example of where a battery tester would be useful to you. Anytime at all that it would help you to know the strength left in your cells without having to guess at it, is when a battery tester does the trick.

In terms of rechargeable batteries, NiMH cells do not suffer from something called memory effect. This means that you don’t have to wait until they are fully “dead” before charging them. In cells that to sustain memory effect, you must wait until the battery has no more power in it before recharging, so as not to lessen it’s memory to the point where they are topped off. NiCD (Nickel Cadmium) rechargeable batteries however, can suffer from this effect and so they must only be charged and recharged once they are fully discharged. You can therefore use your battery tester on NiCD’s to see what power exactly, remains in them and know when and if to charge. Of course, with all non rechargeable batteries, it’s always helpful to know how much power remains in them for whatever your application is. You might be intending to attend a sporting event or birthday party for example. You might wish to capture the moments on video or take still shots. Instead of carrying around additional batteries to use in case the ones in your camera “die”, testing them first with a battery tester will ensure you only take the fully charged cells with you to your event.

Battery testers, cases, racks, and adapters all cost very little relative to the services they perform and benefits they offer you for the use, and maintenance of your inventory of batteries.

Please scroll up to the top of this page where you’ll see our inventory of Battery testers, cases, racks, and adapters. Simply click on any of the links that appeal to you to read more detailed descriptions about them and then add tem to your shopping cart at anytime.

We invite you to check out our terrific daily specials located at the bottom of this page and accessible through our left-side index on each page of our site. In this section, you’ll see the 50+ items we slash the prices on each day. The items change on a daily basis, so when you see a product you want that is reduced so much, grab it then and if we may suggest, stock up on a healthy quantity to fully appreciate the most savings!

At MEGAbatteries, we’re always here for you, our valued visitor. If you have any questions about Battery testers, cases, racks, and adapters that haven’t been discussed on this page, please reach us and we’ll provide all the technical information you need in order for you to make an informed and correct purchase. That’s the MEGA difference!

Call Toll-Free: 1-866-595-3317

Fax Toll-Free: 1-888-735-9475 

Email:sales@megabatteries.com

Wholesale Inquiries: wholesale@megabatteries.com


Daily Featured Specials
Reg. Price:
USD 39.99


Sale Price:
USD 29.99
12 x Energizer CR123A 3 Volt Lithium Batteries (CR17345) click for more info Item ID #19687
Reg. Price:
USD 144.99


Sale Price:
USD 75.99
100 x CR2016 Panasonic 3 Volt Lithium Coin Cell Batteries (On a Card) click for more info Item ID #19166
Reg. Price:
USD 45.99


Sale Price:
USD 26.99
25 x CR2025 Panasonic 3 Volt Lithium Coin Cell Batteries (On a Card) click for more info Item ID #19155
Reg. Price:
USD 81.99


Sale Price:
USD 48.99
50 x CR2032 Panasonic 3 Volt Lithium Coin Cell Batteries (On a Card) click for more info Item ID #19147
Reg. Price:
USD 102.99


Sale Price:
USD 69.99
250 x AG13 (303, 357, LR44) Camelion Button Batteries click for more info Item ID #18925
Reg. Price:
USD 43.69


Sale Price:
USD 34.99
24 x D Duracell Procell Alkaline Batteries  (ideal for Flashlights and Radios) click for more info Item ID #15938
Reg. Price:
USD 129.99


Sale Price:
USD 85.99
50 x CR2450 Energizer 3 Volt lithium coin cell batteries click for more info Item ID #18995
Reg. Price:
USD 127.05


Sale Price:
USD 89.99
48 x AAA Energizer Advanced 1.5 Volt Lithium Batteries  (EA92) click for more info Item ID #17175
Reg. Price:
USD 62.39


Sale Price:
USD 48.99
16 x 3.6 Volt 1/2 AA 1200 mAh (LS14250 and ER14250) Primary Lithium Battery click for more info Item ID #17377
Reg. Price:
USD 87.99


Sale Price:
USD 79.99
8 x CR14250SE-TC23-1 3 Volt Lithium Batteries (Connector) (Allen Bradley 1747-BA 1769-BA) click for more info Item ID #17790
Reg. Price:
USD 259.89


Sale Price:
USD 219.99
100 x AA Energizer Ultimate Lithium (3000 mAh) Batteries (L91) click for more info Item ID #16250
Reg. Price:
USD 80.99


Sale Price:
USD 59.99
16 Energizer CR1/3N (2L76) 3V Lithium Batteries click for more info Item ID #17937
Reg. Price:
USD 46.79


Sale Price:
USD 39.99
24 x  AAA Marsell  Lithium 1100 mAh 1.5 Volt Batteries click for more info Item ID #15747
Reg. Price:
USD 194.99


Sale Price:
USD 149.99
100 x AA Powerizer Lithium 2900 mAh 1.5 Volt Batteries click for more info Item ID #15570
Reg. Price:
USD 99.99


Sale Price:
USD 89.99
12 x 9 Volt Energizer (L522) Ultimate Lithium Batteries click for more info Item ID #19138
Reg. Price:
USD 23.19


Sale Price:
USD 16.99
30 x Size P10 PowerOne Hearing Aid Batteries click for more info Item ID #18274
Reg. Price:
USD 58.39


Sale Price:
USD 49.99
90 x Size P312 PowerOne Hearing Aid Batteries click for more info Item ID #18282
Reg. Price:
USD 38.99


Sale Price:
USD 32.99
iRobot Roomba 500, 600, 700 & 800 Series Vacuum 14.4 Volt 2.1 Ah NiCd Battery Pack click for more info Item ID #17889
Reg. Price:
USD 47.19


Sale Price:
USD 33.99
24 Pcs 357 / 303 Energizer Silver Oxide Button Battery (LR44 AG13  SR44SW SR44W L1154 PX76A G13 A76 S76) click for more info Item ID #18420
Reg. Price:
USD 35.29


Sale Price:
USD 19.99
16 x 9 Volt Energizer MAX Alkaline Batteries click for more info Item ID #15151
Reg. Price:
USD 14.79


Sale Price:
USD 12.99
4 x 9 Volt Duracell Alkaline Batteries (On a Card) click for more info Item ID #19697
Reg. Price:
USD 44.99


Sale Price:
USD 38.99
100 x AA Energizer Advanced Alkaline Batteries click for more info Item ID #19547
Reg. Price:
USD 72.19


Sale Price:
USD 49.99
48 x C Energizer Industrial EN93 Alkaline Batteries. click for more info Item ID #15651
Reg. Price:
USD 489.99


Sale Price:
USD 429.99
360 x C Duracell CopperTop Alkaline Batteries (MN1400) click for more info Item ID #15621
Reg. Price:
USD 62.99


Sale Price:
USD 49.99
48 x AA & 48 x AAA Duracell Procell Alkaline Battery Combo click for more info Item ID #17399
Reg. Price:
USD 29.49


Sale Price:
USD 25.99
8 AA + 8 AAA + 4 C + 4 D + 2 9 Volt Duracell Procell Alkaline Battery Combo click for more info Item ID #17593
Reg. Price:
USD 15.49


Sale Price:
USD 12.99
4 AA + 4 AAA + 2 C + 2 D + 1 9 Volt Energizer Industrial Alkaline Battery Combo click for more info Item ID #17591
Reg. Price:
USD 25.99


Sale Price:
USD 9.99
Universal Power Bank Charger 4000mAh USB Mobile (Black) click for more info Item ID #19132
Reg. Price:
USD 1,000.99


Sale Price:
USD 599.99
100 x V-868 8 Bay Standard AAA & AA Battery Charger click for more info Item ID #15683
Reg. Price:
USD 39.99


Sale Price:
USD 34.99
4 Pcs RFA182, A12, R21, R22, R51 and MicroLite Compatible Invisible Fence Dog Receiver Battery click for more info Item ID #18008
Reg. Price:
USD 22.99


Sale Price:
USD 17.99
2 Pcs Rayovac RFA182, A12, R21, R22, R51 and MicroLite Invisible Fence Dog Receiver Battery click for more info Item ID #19058
Reg. Price:
USD 45.59


Sale Price:
USD 32.99
AA / AAA NiMH Smart Slim Travel Charger with USB Plug & 8 x AA Duracell NiMH 2450 mAh Batteries click for more info Item ID #19658
Reg. Price:
USD 39.99


Sale Price:
USD 26.99
8 Bay AA / AAA Charger + 8 AA (600 mAh) NiCd Batteries click for more info Item ID #15198
Reg. Price:
USD 69.99


Sale Price:
USD 49.99
8 Bay AA / AAA Charger + 24 AA 800 mAh NiCd Batteries click for more info Item ID #17780
Reg. Price:
USD 21.39


Sale Price:
USD 16.99
Quest AA & AAA Charger + 4 AAA (1200 mAh) AccuPower NiMH Batteries click for more info Item ID #17781
Reg. Price:
USD 34.99


Sale Price:
USD 26.99
Quest AA & AAA Charger + 8 AA (2700 mAh) NiMH Batteries click for more info Item ID #16635
Reg. Price:
USD 13.89


Sale Price:
USD 9.69
Quest AA & AAA Charger + 4 AA 1200 mAh NiMH Batteries click for more info Item ID #16631
Reg. Price:
USD 39.99


Sale Price:
USD 26.99
Quest Q2 Smart Charger + 8 AA 2700 mAh NiMH Batteries click for more info Item ID #16851
Reg. Price:
USD 120.99


Sale Price:
USD 89.99
16 Bay AA / AAA LCD Battery Charger + 16 AA 2700 mAh NiMH Batteries click for more info Item ID #19609
Reg. Price:
USD 159.99


Sale Price:
USD 125.99
16 Bay AA / AAA LCD Battery Charger + 32 AAA 1200 mAh NiMH Batteries click for more info Item ID #19626
Reg. Price:
USD 176.99


Sale Price:
USD 129.99
10 Bay 9 Volt Charger + 10 x 9 Volt 300 mAh AccuPower NiMH Rechargeable Batteries (no memory effect) click for more info Item ID #17307
Reg. Price:
USD 234.99


Sale Price:
USD 211.49
24 AA (2600 mAh) + 24 AAA (1200 mAh) + 8 C (3000 mAh) + 8 D (4000 mAh) AccuPower NiMH Batteries click for more info Item ID #17866
Reg. Price:
USD 102.99


Sale Price:
USD 92.69
8 AA (2600 mAh) + 8 AAA (1200 mAh) + 4 C (3000 mAh) + 4 D (4000 mAh) AccuPower NiMH Batteries click for more info Item ID #17857
Reg. Price:
USD 44.99


Sale Price:
USD 39.99
12 Volt 9 Amp Switching Power Supply click for more info Item ID #16670
Reg. Price:
USD 35.99


Sale Price:
USD 26.99
S02 300 Lumens Flashlight + 2 x CR123 Duracell Lithium Batteries (DL123) click for more info Item ID #19228
Reg. Price:
USD 71.99


Sale Price:
USD 49.99
S03 Tactical 900 Lumens Flashlight + Lithium Ion Charger + 18650 Samsung Li-Ion 3.7 Volt Battery (2600 mAh) click for more info Item ID #19221
Reg. Price:
USD 33.99


Sale Price:
USD 22.99
2 x Eclipse 130 Lumens LED Cree Ultra Bright Flashlights + 6 x AAA Energizer Industrial Batteries click for more info Item ID #19104
Reg. Price:
USD 32.99


Sale Price:
USD 19.99
3 x 24 Head Led Ultra Bright Rubber Puck Lights click for more info Item ID #18087
Reg. Price:
USD 44.99


Sale Price:
USD 16.99
Bluetooth Wireless Rechargeable Stereo Speaker - BTS-1000 click for more info Item ID #18068
Reg. Price:
USD 24.99


Sale Price:
USD 14.99
Eclipse Pro EP-2500 Hi-FI Stereo Sound Foldable Headphones (Black) click for more info Item ID #18064
Reg. Price:
USD 24.99


Sale Price:
USD 16.99
Eclipse Pro EP-2000 Studio Style Dolby Sound Foldable Stereo Headphones (White) click for more info Item ID #18063