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Loosing weight in your Bellyboat

Posted on 20 October 2013 by Philip

In this article I would like to explain why I am using Lipo batteries to power my fishfinder on my bellyboat. I am getting a lot of questions about this subject so I think it is time to spread the info.

One of my other hobbies is flying remote-controlled airplanes, to power the airplane we use Lipo batteries because they are very light and have a lot of power. This is the same battery that’s in your smartphone!

What is a lipo battery

Lithium-ion polymer batteries, polymer lithium-ion or more commonly lithium polymer batteries (abbreviated Li-poly, Li-Pol, LiPo, LIP, PLI or LiP) are rechargeable (secondary cell) batteries. LiPo batteries are usually composed of several identical secondary cells in parallel to increase the discharge current capability, and are often available in series “packs” to increase the total available voltage. (source: Wikipedia http://en.wikipedia.org/wiki/Lithium_polymer_battery).

Benefits of using Lipo batteries

Light weight

The battery that I use is a 1000 mAH 3 cell lipo with a weight of 87 gr. I use a 1000mAH because this is the battery that came out of my airplane. Now I am switching over to a 2200mAH for longer use of the fishfinder. A normal acid battery weighs around 2.5 kg and that’s a lot in a small bellyboat.

Small

A 1000mAH battery:

lipo 1000

Schermafbeelding 2013-10-20 om 22.31.53

A 2200mAH battery:

lipo 2200

Schermafbeelding 2013-10-20 om 22.32.05

Available in a huge power range.

My Lowrance X4Pro fishfinder needs a 10 to 17 volt DC, 3 cell lipos have 11,1 volt. You can go up to 4 cells lipos with 14,8 volt. The mAH range is going from 1000mAH up to 8400mAH.

Put in a lipo safe bag, and a zip-lock bag for extra security

Put in a lipo safe bag, and a zip-lock bag for extra security

It all fits nicely in your bellyboat

It all fits nicely in your bellyboat, don’t put it where you rest your arm or where there’s any other weight on it

What to choose?

That’s simple, in the manual of your fishfinder you can find how much mAh your device needs per hour. My X4Pro needs 170 mAH with lights off and 240mAH with lights on. So I can use the fishfinder almost 6 hours with lights out on a 1000mAh 3 cell Lipo and almost 13 hours by using a 2200mAH 3 cell Lipo.

The most popular size lipo in the R/C world is a 2200mAH 3 cell lipo. Therefor the value for money is the best with this product. You can go higher on the mAh but the price will go up to, the price of a 2200mAH is only $ 7,81 so you can buy 4 and fish for days, if a lipo dies you have backup!

In the specifications of lipos you will find the discharge rate C. This lets you know how quickly a lipo can give the power. In our application this is not relevant so order a c20, they are cheap. If you fly a big ass helicopter you have a motor that needs a lot of power quickly and then a high C rate is better.

Where to buy?

You can buy lipos at Ebay, Conrad our your local R/C hobby store. I buy them at www.hobbyking.com because they are good en have the best price. They have a warehouse in every region, also in the Netherlands, this safes time and customs trouble. Edit: please check out the comments below about hobbyking.com. Not everyone seems to be satisfied about their service. If you are in doubt wether to place your order there, you can always use these links to check out what products you need, and order them somewhere else.

My Starter pack

This will save you some time in lipo woods, make sure you select a warehouse in your region before ordering.

Everything you need

Everything you need

Batteries

Turnigy 2200mAh 3S 20C Lipo Pack
http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=8932

Turnigy 1000mAh 3S 20C Lipo Pack
http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=9163

Charger

Turnigy balancer & Charger 2S-3S (you need a 12~15v DC, best buy at your local electronic store for around 10 euro. )
http://hobbyking.com/hobbyking/store/__41730__Turnigy_balancer_Charger_2S_3S_EU_warehouse_.html

Connector

2200 mAH battery
To connect the wire of the fishfinder to the lipo:

Nylon XT60 Connectors Male (5 pairs) GENUINE
http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=36286

1000 mAH battery
To connect the wire of the fishinder to the lipo and to replace the small connector on the battery (the 1000 mAH batteries have a smaller connector that has to be replaced with a female XT60):

Nylon XT60 Connectors Male (5 pairs) GENUINE
http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=36286
And Nylon XT60 Connectors Female (5 pairs) GENUINE
http://hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=36304

Lipo Safe bag for loading and transport

Lithium Polymer Charge Pack 18x22cm
http://hobbyking.com/hobbyking/store/__38354__Lithium_Polymer_Charge_Pack_18x22cm_Sack_EU_warehouse_.html

Warning

What can go wrong

I’ve used lipo batteries for some years now and I’ve never had any problems with them. But be sure to follow the rules above. If you don’t, you can expect bad things to happen:

10 Responses to Loosing weight in your Bellyboat

  1. on 21 October 2013 at 18:13 bobo said:

    Nice article flip !
    Saves me explaining it a million times in the future 🙂

  2. on 31 October 2013 at 13:24 Cornelis said:

    So for a 2200mAH set you need :

    – battery 2200mAH
    – Nylon XT connectors Male (5pair)
    – Charger
    – Save bag.

    correct ?

    Cornelis

    • on 3 November 2013 at 21:57 Philip said:

      Cerrect Cornelis!

  3. on 4 September 2014 at 11:35 Twan Croonen said:

    Guys,

    Great idea and after reading this articles immediately placed an order at hobby king. Only the reality is that I have no package got from hobby king. Until today within Now they’re finally after much wrangling deposit my money back. All in all I have thus had nothing and I still have a heavy battery, after 4 months:-)

    The solution is fine, but my experience with hobbyking are very poor.

    Good luck to anyone who has an usually benefit !!

    Voor de nederlanders onder ons:

    Gasten,

    Prima idee en na het lezen van dit artikelen meteen een bestelling gedaan bij hobbyking. Alleen de realiteit is dat ik tot vandaag geen pakketje binnen heb gekregen van hobbyking. Ze gaan nu eindelijk na lang getouwtrek mijn geld terug storten. Al met al heb ik er dus niks aan gehad en heb ik nog steeds een zware accu, na 4 maanden 🙂

    Dus oplossing is prima, maar mijn ervaring met hobbyking zijn zeer slecht.

    Succes voor iedereen die er wel baat bij heeft!!

    • on 16 September 2014 at 02:08 Vincent said:

      Hi Twan,

      I’m sorry for the late response. I’m glad you pointed this out. Any one else with this issue? I’ve heard a similar story from another buddy too. I’ve added a reference in the article to this comment for the other readers.

      We are in no way affiliated with hobbyking.com, we are just some happy customers that find the website great because it usually offers all the things you need to set up this system, and they are cheaper than most competitors.

      Cheers, Vincent

  4. on 2 October 2014 at 21:55 Simon said:

    Hi Twan

    I also ordered my batteries at the Hobbyking website about 4 months ago but haven’t received them either! Did you order from the Global or European warehouse? I ordered from the Global warehouse since the batteries weren’t in stock in Europe. Right now they are, so I am considering ordering them again from the European warehouse… Unless you had this same problem with the European warehouse too.

    Thanks in advance.

    • on 3 October 2014 at 17:56 Twan said:

      Hi Simon,

      Hmm, too bad to hear. I have still mixed feelings about this company any i won’t order anything by this company.

      I ordered from an European warehouse, but the package was shipped by malasyan airlines. That was also weird.

      I got my money back now.

      Good luck with it!!

      Greetz twan

  5. on 21 October 2014 at 09:02 Cornelis said:

    any alternative supplier for the hobbyking ?

    thnx in advance,

    Cornelis

    • on 22 October 2014 at 15:45 Simon said:

      Hi Cornelis

      I cancelled my order from the Hobbyking global warehouse and ordered the batteries again from the EU warehouse. Luckily I received them within less than a week!

  6. on 6 November 2014 at 19:48 Twan said:

    Lol, After 6 months i’ve received mij stuff 🙂

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