Solar Technology International Lifos 105 User Manual Download Page 2

Thank you for purchasing this advanced lithium iron  

phosphate (LiFePO4) battery. Combining the very best  

lithium cells along with an outstanding battery management 

system ensures this battery will provide you with incredibly 

long-lasting power in a super lightweight package.

A few tips on how to get the best from your Lifos 105 battery:

  Protect the battery from direct sunlight although it will work well in  

a wide temperature range (-20 to +60 degrees C).

  Avoid using Lifos 105 in damp or wet conditions but if you do need to  

use it in these conditions consider using an all-weather enclosure such as the  
BB0001 Battery Box.

  Observe the correct polarity otherwise permanent damage could be caused  

– the battery casing is marked with + and –.

  Don’t short circuit Lifos 105 otherwise permanent damage could be caused.

  Lifos 105 can be connected in Parallel (Fig.1). You are able to connect  

up to 4 Lifos 105 batteries in parallel giving you a battery bank capacity  
of 420Ah (105A x 4). 

  Lifos 105 can be connected in Series (Fig.2). You are able to connect up  

to 4 Lifos 105 batteries in series giving you a battery bank voltages of  
12v (single battery), 24v (2 x batteries) 36v (3 x batteries) or 48v (4 x batteries). 

 

The Lifos 105 can be connected up in parallel or series when needed but  
only in the below configurations:

 

Please note when connecting up multiple batteries you must first fully  
charge each battery and check they don’t have a difference of more than  
0.02v (20mv). Note to test all Lifos batteries’ voltage over 24 hours after  
charge to get firm values.

  Most mains lead acid battery chargers will charge the Lifos 105 but some smart 

chargers might only charge up to 85%. If this is the case we recommend getting 
a new charger, please see our website for recommendations on the FAQ pages. 
However you will not cause any damage to the battery if using your old charger. 
For DC – DC charging please also check our website for recommendations on the FAQ pages.

  Lifos 105 can be used if it is positioned on its side but will give best performance if it is positioned 

with its terminals facing upward.

NOTE – do not mix new Lifos 105 batteries with old batteries, whether in series or parallel.

Storage of Lifos 105
Lifos 105 battery has an extremely low rate of self-discharge but if you intend not to use the battery 
for an extended period of time please charge it 50% to 80% prior to storage. It is recommended to 
re-charge the Lifos 105 once every 3-6 months.
NOTE – allowing the battery to over discharge (+6 months since its last charge) can lead to a 

shortened life, or even damage the battery.

Parallel

Series

1 (12v)

2 (24v)

3 (36v)

4 (48v)

1

YES

YES

YES

YES

2

YES

YES

YES

YES

3

YES

YES

NO

NO

4

YES

YES

NO

NO

Fig.2

Fig.1

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