"Ebi" Ceramic Cat and Dog Drinking Fountains
The Quality & Aesthetics You Want, The Safety and Health-Promoting Features Your Pet Deserves
Handcrafted in the USA


Batteries for the EBI cordless pet drinking fountain

All of our water fountains for cats and dogs use a DC pump that can be powered either by battery or a low voltage DC power adapter (plugged into your outlet). So you can plug it in or power it using a battery.
The battery can be placed:
- inside a cordless fountain (so no cable is showing outside the fountain),
- outside any of our fountains instead of a power transformer (then you’ll have an external box with low voltage cables leading to the fountain) or
- inside a detached ceramic battery compartment standing directly behind or underneath your "regular" round Ebi pet drinking fountain.
- You can choose between a D-cell box/holder or a rechergeable Li-Ion USB battery (power pack).

This is how long our pump runs with different battery options:

Battery-Type number Type run time rechargeable?
AA-Cell 4 NiMH/NiCd 5 hours yes
AA-Cell 3 to 4 alkaline 30 hours no
D-Cell 4x10.000mAh NiMH up to 3 days yes
D-Cell 4 or 8 alkaline up to 12 days no
Li-Ion USB 5 Volt Li-Ion up to 10 days

The D-cell battery holder:

The D-cell battery pack (3 or 4 D-cells, depending on the water pressure you prefer) will keep the fountain running for approx. 140+ hours depending on the quality of the batteries used. Rechargeable 10.000mAh NiMH professional D-cells last approx. 3 to 4 days on one charge.
   pet fountain with internal USB battery
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Li-Ion/polymer (USB) battery:

Our pumps can be powered by any kind of battery in the range of 4 to 6 volt. A Li-Ion-USB battery provides 5 volt. The battery is connected via a USB adapter to your fountain pump. With this adapter you can connect the pump to any USB power supply (eg. USB charger, USB charger battery, computer, USB battery backup, USB power pack etc.). We supply the adapter but we do not supply any batteries.

Sample USB battery backup  Fountain with USB battery  cordless square pet drinking fountain with internal Li-Ion-USB battery cordless round pet drinking fountain with internal Li-Ion-USB battery

A portable USB battery/USB power pack (usually used to recharge your cell phone when you are off grid) can be used to power the fountain pump. They are lightweight and have a large capacity. Be sure to pack the battery into a Ziplock bag since these batteries don't like getting wet.


We’ve tested several different USB batteries (see table below.) The Anker is supposed to be the best quality with regard to lifespan, but we didn’t get any significantly better runtime with it than the others. The RavPower RP-PB41 has the longest runtime as a single battery but can not be used as a tandem battery (two batteries parallel) since the RavPower RP-PB41 doesn't take over automaticly. If you’re already using a USB battery to recharge your mobile phone or tablet, we recommend you try it for this application before buying anything new.


These tests have been made in 2016/2017. Since then models have changed, are discontinued and 100reds of new models are on the market.

type capacity continuous
runtime with
pump model
Seller remarks
Powernews Solar Charger 300,000 mAh 1.5 days  Ebay  
AIBOCN WX010 10,000 mAh 2 days  Amazon  side USB connector
Move Power Solar Charger 20,000 mAh 2.3 days  Ebay  
Propel 51107 13,000 mAh 3 days  All-Battery.com  
SA01300 50,000 mAh 3 days  AliExpress  
Anker Powercore 13000 13,000 mAh 3.5 days  Amazon  
RavPower RP-PB19 16,750 mAh 3.7 days  Amazon  
GJT  G-088 20,000 mAh 4 days  Amazon  
Anker Astro E7 25,600 mAh 4.5 days  Amazon  
iMuto X4 (*1) 20,000 mAh 5 days  Amazon  new generation models switch off
 after 45 seconds (status 4/2017)
RavPower RP-PB41 26,800 mAh 5.5 days  Amazon  

Continuous runtimes with pump model JT-180 are approx. 20% shorter.


Battery combinations (with double USB adapter):

Battery 1
(starting battery)
Battery 2 (needs to take
over when battery 1 is empty)
runtime with
pump model
Anker Astro E7 RavPower RP-PB41 26,800 mAh - Rav doesn't switch on automatically
iMuto X4 (*1) RavPower RP-PB41 26,800 mAh - Rav doesn't switch on automatically
RavPower RP-PB41 26,800 mAh Powernews Solar Charger 7 days Powernews switches on automatically
Anker Powercore 13000 RavPower RP-PB19 7.3 days RavPower switches on automatically
Anker Astro E7 GJT  G-088 8 days GJT switches on automatically
RavPower RP-PB19 iMuto X4 (*1) 8.5 days See (*1) below
Anker Astro E7 iMuto X4 (*1) 9.5 days See (*1) below

(*1) iMuto X4 or X6 new generation models don't work anymore; they switch off after 45 seconds (status 4/2017).


Batteries with problems:

type capacity continuous
Seller remarks
iMuto X4, 2017 model 20,000 mAh -  Amazon is turning off
iMuto X6 30,000 mAh -  Amazon is turning off
ZILU 16,800mAh -  Amazon is turning off
CBD  LA801 50,000 mAh 4.5 days  Newegg some models keep turning off
18650 Power bank 50,000 mAh -  AliExpress is turning off


As the table shows, these will need to be recharged approx. every 3 to 5 days. We suggest ordering 2 batteries, so that one can be in use while the other is charging. We have constructed a “double adapter cable” that allows 2 batteries to power the fountain in tandem – this will give you double the runtime before having to recharge, but you’ll need a total of 4 batteries.

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So how should you handle your batteries?

There is some very solid, consistent advice about getting the most out of your batteries:

1. Be prepared to replace them, eventually. Rechargeable batteries don’t last forever, and through time and use they will stop working. Thank them for saving you money, recycle them, and move on.

2. Buy a good charger. You don’t have to spend a fortune on the best charger available, but make sure you get a “smart” charger, one that electronically monitors the recharge process and prevents overcharging. Not only is it better for the batteries, it will use less power than cheap chargers, which often rely on a simple timer mechanism.

3. Remove the batteries when the recharge is complete. Unnecessary time on the charger means more “trickle” power is used to keep them charged—so more wear and tear and more wasted power.

4. Don’t regularly discharge your batteries completely. Complete discharge will shorten their lifespan. For more info's about rechargeable alcaline batteries see: Wikipedia

5. Store your batteries fully loaded (never empty!) at room temperature in a dry location. Excessive heat can definitely damage your batteries and cause them to lose charge faster.

6. Every battery should be protected from water, but Li-Ion batteries (USBs) are particularly sensitive to water damage because they have electronics inside. We craft our internal battery compartments to keep the batteries dry but there is always the possibility of condensation forming, so it is imperative that the batterie(s) be enclosed in a water tight ziplock bag before putting them inside the compartment.  Likewise, if your cat has the propensity to play in the water, external batteries need to be protected as well. You have about 7 feet of cord available, so put them in a higher place, a nearby drawer or a waterproof container.

The D-cell battery box or holder:

The D-cell battery pack (3 or 4 D-cells, depending on the water pressure you prefer) will keep the fountain running for 140 hours. Rechargeable 10.000mAh NiMH professional D-cells last approx. 3 to 4 days on one charge.
D-cell battery pack for Ebi-fountains   pet fountain with internal USB battery

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