• Daily Deals
  • Sell
  • Customer Support
  • Geico


Picture Information

Image not available
Have one to sell? Sell it yourself

Details about  5mm LED 12v Battery level / Charge monitor indicator- K

5mm LED 12v Battery level / Charge monitor indicator- K

5mm 12v LED version of our popular 'E' unit - EasyFit

Seller information

100% Positive feedback
Registered as a Business Seller

Item Information

Item condition:
Error icon
More than 10 available / 511 sold
Please enter a quantity of $qty_dummy$ or less Please enter a quantity of 1 Purchases are limited to $qty_dummy$ per buyer Please enter quantity of 1 or more Please enter a lower number Choose quantity that is less than $qty_dummy1$ or equal to $qty_dummy$ You can only choose quantity that is equal to $qty_dummy$
GBP 10.49
Approximately US $17.81(including shipping)
191 watchers
100% positive feedback
Limited quantity remaining
More than 63% sold
GBP 2.50 (approx. US $4.24) Royal Mail International Standard (Small Packets) | See details
See details about international shipping here.  help icon for Shipping - opens a layer
Item location:
kettering, Northamptonshire, United Kingdom
Ships to:
Worldwide See exclusions
International shipping and import charges paid to Pitney Bowes Inc. Learn More- opens in a new window or tab
14 days, buyer pays return shipping See details
 | See details - opens in a new window or tab
Get the item you ordered or get your money back.
Covers your purchase price and original shipping.
eBay item number:
Seller assumes all responsibility for this listing.
Last updated on  Jul 25, 2014 01:06:43 PDT  View all revisions

Item specifics

New: A brand-new, unused, unopened, undamaged item (including handmade items). See the seller's listing ... Read moreabout the condition
Gammatronix Ltd Electronics Store

Gammatronix Ltd Electronics Store

Sign up for newsletter Sign up for newsletter


Integrated 5mm LED 12v Battery charge / level indicator


NEVER be left WITHOUT WARNING that your Bike, Car, Caravan, Camper, RV, electrical equipment, RC model, Bait Boat, or even that battery powering your light in the shed, is going 'Flat'


This versatile unit can be used wherever you have a  12v   lead-acid battery (Gel and matt types included)  or charging system. One wire to battery positive, one to negative. We couldnt have made it simpler.

Check the specification!...............

  • Small mounting footprint using 5mm LED.
  • Uses same measurment system as our most popular 'E' 10mm unit, but in a compact 5mm package
  • Works with all Lead acid, fibre mat or gel cells, and all other batteries that operate within the set ranges
  • Protects and warns  against Undercharging, Overcharging, and 'flat' batteries.
  • 12v DC operation at 5mA or less consumption.
  • TWO operating ranges via 'yellow wire'
  • Tri colour (Red, Green, Yellow)  5mm LED with seperate optional bezel
  • Mounts in 6.5mm hole with bezel, or 5mm without (using your own mounting system)
  • Approx 20mm behind  control panel when mounted, and pcb can be flexed through 90 degrees to further reduce depth
  • Unit will operate down to 3.7v and up to 16v.
  • Multiple oversampling - unit takes 10+ readings to obtain greatest accuracy.
  • Built in hysteresis to prevent 'strobing LED' when unit is at changeover point.
  • Supplied with fitted connection leads
  • Comprehensive fitting instructions


The tri-colour LED will illuminate in different colours, solid or flashing, selected by the yellow mode wire. One of two modes, as per the table below, show the state of your battery. "Charging Mode" increases the point at which the LED lights to 13.2v, which will only be attained if your alternator or charging device is supplying power to your battery.


Charging Mode (Yellow wire cut)


Level Indicator Mode (Yellow wire intact)

Red /Grn Flsh



Yell Flsh


Red Flsh




Yell Flsh

Yell Fast Flsh


Red Flsh

Red Fast Flsh















The Yellow light from a 5mm tri-colour LED may vary in shade according to viewing angle. Rotate the LED in its mounting at installation time to provide the best viewing experience.

The unit may be configured at installation time to run in one of two modes, selected by cutting, or leaving intact, a yellow wire 'loop' at the rear of the unit. It is permissible to cut and extend the yellow wires ro a remote switch should the user wish to change modes in operation.

The unit fits into a 6.5mm hole, into which its bezel (shown on LED in the photo) inserts, and the LED clips into the bezel from behind.


Buy with confidence, from a UK Limited Company.  We have a no arguments return guarantee.

Check out our Ebay shop for other battery monitor models.


Shipping : Please note that Ebay postage estimator (beyond our control) will often give a WILD range of dates for you to expect receipt of your unit.  Economy post may often be with you in 6-10 days, BUT DOES NOT HAVE TRACKING and may on occasion take longer,

 If you require tracked delivery, please upgrade to the 16 dollar postage option which will provide you with a tracking number, and a faster shipment time.

Approx 5% of shipments may be delayed by USA customs / homeland security for checks, which is outside of our control, for up to 20 days. 


On 18-Jan-12 at 12:02:15 GMT, seller added the following information:

Business seller information

Gammatronix Limited
S. Philip gusterson
26 Kingfisher Way
Burton Latimer
NN15 5TE
United Kingdom


Return policy

After receiving the item, contact seller within
Return shipping
14 days
Buyer pays return shipping
Return policy details
Gammatronix Ltd. Warranties & Returns Policy For UK customers, under the distance selling regulations, you have 14 days to return the item if you change your mind. We will provide a full refund of your purchase costs inc any shipping if charged after it is returned to us in original undamaged condition. For rest of the world, we will only refund your purchase cost of the item. (not shipping). In all cases please use the Ebay “Return an item” feature so that we can track your return and obey Ebay policies. All goods are covered by a 12 month manufactures warranty (unless otherwise stated). In the unlikely event of your goods being delivered faulty, or damaged, you must contact us within 14 days of the date of delivery via Ebay Messenger “Ask a question” in order for us to arrange a replacement or provide a refund. Please note that although your warranty covers both parts and labour it does not cover delivery and collection costs of the goods to and from us. Any charge must be paid by you, the customer. If products are returned damaged or modified we reserve the right to make an appropriate partial refund. Any items under warranty will be repaired or replaced with an item of similar condition. All refunds and liabilities are limited to the cost of the item only, and you should obey all installation and operational instructions supplied with the product.

Questions and answers about this item

No questions or answers have been posted about this item.

Seller assumes all responsibility for this listing.

Shipping and handling

Item location: kettering, Northamptonshire, United Kingdom
Shipping to: Worldwide
Excludes: Armenia, Azerbaijan Republic, Georgia, Kazakhstan, Kyrgyzstan, Russian Federation, Tajikistan, Turkmenistan, Uzbekistan, Belarus, Moldova, Ukraine
Handling time
Will usually ship within 1 business day of receiving cleared payment[newWindowTxt].

Payment details

Payment method Preferred / Accepted  
Credit or debit card through PayPal

Immediate payment required for this item

Immediate payment of GBP 10.49 is required.

Seller's payment instructions

For non UK Customers : As standard, we ship airmail untracked to keep your costs low. Shipments take 5-7 working days to arrive for the vast majority of customers. Approx 5% may suffer customs and postal delays at destination country and may take up to 3-4 weeks. Please be patient, as your postal service is outside of our control. If you require faster tracked postage please choose the appropriate option. Speed of delivery is still the responsibility of the carrier.
time left
Current bid amount
Shipping amount
Bid Count
time left
current bid
Current bid amount Approximately:
Shipping amount Approximately:
Import charges:
Import charges:
(estimated and based on max bid)
Your bid amount


Your current max bid:
Increase your chances of winning by setting a higher bid now.
Let eBay place automatic bids for you  This opens an help overlay dialog about automatic bidding.
How does automatic bidding work?
As other bids come in, eBay will automatically raise your bid in small amounts, up to your limit. Learn More. - opens in a new window or tab
Close button. This closes the help overlay dialog.
, up to
By submitting your bid, you'll be committing to buy this item from the seller if you are the winning bidder.
By submitting your bid, you are committing to buy this item from the seller if you are the winning bidder. You have read and agree to the Global Shipping Program terms and conditions - opens in a new window or tab. Import charges previously quoted are subject to change if you increase you maximum bid amount.
By clicking Confirm, you commit to buy this item from the seller if you are the winning bidder.
By clicking Confirm, you are committing to buy this item from the seller if you are the winning bidder and have read and agree to the Global Shipping Program terms and conditions - opens in a new window or tab. Import charges previously quoted are subject to change if you increase you maximum bid amount.
Tell us what you think 
We've made a few changes to bidding.
Were these helpful?
Bid layer is updating the contents.
Resume bidding, if the page does not update immediately.
FREE shipping
See item description
(Enter ##1## or more)
(Enter more than ##1##)
Your max bid:
You've been outbid. Don't let it get away - place another bid.
You've been outbid by an automatic bid placed earlier by another bidder.
You're the highest bidder on this item!
You're the first bidder on this item!
You're the highest bidder on this item, but you're close to being outbid.
This auction is almost over and you're currently the high bidder.
You're the high bidder on this item, but the reserve price hasn't been met yet.
You've been outbid by someone else.
You can still win! Try bidding again.
You've been outbid by someone else's max bid.
You can still win! Try bidding again.
Your bid wasn't accepted because it's the same as someone else's bid.
Try raising your max bid.
You're the highest bidder!
To increase your chances of winning, try raising your bid.
You're the first bidder. Good Luck!
You're still the highest bidder!
You increased your max bid to
Please enter your bid again.
Enter a valid amount for your bid.
Enter a bid that is the minimum bid amount or higher.
You have to bid at least
Sorry, you can't lower your maximum bid once it's placed.
This seller requires the buyer to have a PayPal account to purchase this item. Get a PayPal account here .
Your bid is the same as or more than the Buy It Now price.You can save time and money by buying it now.
Place bid
Review and confirm your bid
Bid confirmation
Increase max bid
Time left:
Current bid:
(approximately ##1##)
Your maximum bid:
(approximately ##1##)
Increase your maximum bid:
By clicking 1 Click Bid, you commit to buy this item from the seller if you're the winning bidder. Learn moreabout 1-click bid - opens in a new window or tab
(approximately ##1##)
Winning bid:
Starting bid:
Congrats! The auction has ended and you're the winner.
The auction has ended, but the reserve price was not met.
Sorry, the auction has ended and you were outbid.
Good news, you're the high bidder.
Sorry, you've been outbid.
You're the high bidder, but the reserve price is not met.
Please enter a higher amount than the current bid.
Maximum bids cannot be lowered once submitted.
Please enter a valid number.