MNP SB12 Solar Powered Pond Pump Backup Battery

from $269.00

Our versatile multi-function solar battery station are designed to store solar energy for day and for well after dark. This cutting-edge system powers our twin panel solar pumps (not the SP25), an LED light, and other 12V devices. We offer two battery options: Lead Acid and Lithium, catering to your specific needs.

It’s important to note that all batteries have a limited lifespan. The Lead Acid battery will experience a gradual decline in capacity after approximately 300-500 days of use. On the other hand, the Lithium battery, known for its lighter weight, boasts an extended lifespan of up to 1,000 days. These batteries have limitations detailed below but in summary the max. head is reduced from ten feet to six feet and you are likley to see a reduction in GPH by a third. They will only provide extra run time after a sunny day and may tale 1-2 hours to charge up each morning again if there is sufficient sun.

Replacement batteries will be available soon. The estimated price for a Lead Acid battery is $129, while the Lithium battery will be around $179, both including shipping charges.

If you intend to store the battery for an extended period, we recommend fully charging it beforehand. In the case of the Lead Acid battery, it is advisable to charge it fully if it will be in storage for more than three months to preserve its lifespan.

Should you have any questions, please do not hesitate to contact us.

SKU: SP50-1-1 Categories: ,

Free shipping 48 states.

  • My Natural Pond recognizes the need to have solar pumps continue running when there is limited or no sun.  Providing this facility for our powerful range of solar pumps demands some trade-offs to keep the costs reasonable and the performance acceptable. The MNP SB12 meets this need by lowering the pump speed by 35% and max. head from 10 to 6 feet. In return for this performance degradation the battery can provide many hours of continuous running after the sun goes down.
  • The battery is designed to work only with our two panels solar pond kits.  All but one of the connections are proprietary and match those on our solar kits.  We cannot offer any warranty on this battery when used with other products than our own listed on this site.
      • This multi-function solar battery station is used to store solar energy for day and night use and is designed for powering solar pumps, lights and other 12V devices.
      • The input power should be from our solar panels.
      • There are three 12V output ports for one of our solar submersible pumps, a light and one on the back with a terminal interface is for any 12V third-party device.
      • The battery station has built-in functions of over-charging and over-discharging protection. The input has over-current protection and reverse-polarity protection. The outputs have overload protection and short-circuit protection.
      • There are six LED indicators showing the status of SYSTEM and CHARGING, currently activated selected output mode and on/off state of LIGHT output
  • If you are relying on solar power and the battery to keep your fish alive there can be occasions where bad weather extends for many days and the pump will not work during this time.  If you have any questions at all about this battery, please call us - 855-723-3564.  It is a well-made, weather proof, heavy duty product that when correctly used can provide extra pump run time.
  • No Battery With Battery


    Flow GPH Max Head Feet Flow GPH

    Max Head Feet

    SP50 Waterfall Pump

    898 10  660


    SP100 Waterfall Pump

    1268 10  1004


    SF70 Fountain Pump

    898 10  660


    SF100 Fountain Pump 1268 10  1004


  • Pease take note of the reduced max. head for all our pumps using this battery.  The height of a fountain will likely be reduced by 33%.The battery has three modes “Solar”, “Battery” and “Timer”.  Pressing the start/stop button moves the three modes through these three choices.

Battery Mode In Battery mode the pump is connected directly to the battery and the battery is always powering the pump and the solar panels are charging the battery.  After the sun goes down the battery will continue running the pump for the total time (daytime running time on a sunny day plus after sundown hours) identified below (SF models are solar fountain pumps):

Battery Operational Hours











 On the morning of a sunny day if the battery has little or no charge it may take two hours to charge the battery sufficiently for it to run the pump for the hours stated above. As an example, the SP50 waterfall pump may start running around 10:00 am and continue running until 1:00 am the next day.  All times are based on a sunny summer day.  Solar Mode  The SBB12-24E battery can also work in “solar mode”.  This is only used to charge the battery for a future event perhaps a party in a few days when it may be cloudy.  In Solar Mode the solar panels will first get the battery sufficiently charged and then operate the pump directly and any surplus energy from the panels keeps the battery being fully charged. When needed the battery can be used to run the pump for the number of hours in the table below.

Solar Mode Hours
Model Hours
SP50 14
SP100 8
SF70 14
SF100 8


Timer Mode   In Timer mode the pump can be set to run for four hours every day at the time you first select provided the battery is sufficiently charged.  Perhaps you only wish to use the pump from 4 pm then setting the timer at this time will result in the pump running at this time for up to four hours depending on how sunny it has been.   Running other devices   This battery has two further output options.  One can support a device like LED lights at 12V and the other any other device requiring 12V. When using lights these will only operate when the panel is in darkness.  Please refer to the supplied instructions for more information about using battery.

Lead Acid batteries all have a finite life before they start to degrade in performance.  We expect you will get 400-500 days use from this battery depending  on a number of factors.  We will shortly be offering a replacement internal battery for around $125 including shipping.


Lead acid battery 12 V, 24 Ah
Charging voltage, current and power DC 18 V, Maximum charging current: 4A, Maximum input power: 150 W
Output pump DC 12 V, Maximum output power: 48 W
Output light DC 12 V, Maximum output power: 12 W
Universal Output DC 12 V, Maximum output power: 12 W
Fuse current 10A
Size 255 x 255 x 205 mm
Cable length 0.5m
Extension cable length 5m
Net weight 9.3 KGS
  • Feel free call us 855-723-3564 for more information to ensure this fits your needs.

Additional information


Lead Acid, Lithium Battery

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