LE300
SMART BATTERY SYSTEM
Description
The BOS LE300 smart battery system is a fully scalable lithium extension solution to add capacity to lead-acid batteries. Its intelligent battery management system allows an easy Plug & Play instalation and prolongs the lifespan of both batteries by up to 10 years.
Technical specifications
System voltage
12 VDC
Norminal voltage
12.8 VDC
Voltage range
11 -15 VDC
Battery packs used in LE300
IFpR/26/65 [8p/4s] E/-20NA/95 LiFePO4 rechargeable battery
Nominal lithium capacity
28 Ah / 358 Wh
Usable lithium capacity
90% (25.2 Ah / 322 Wh)
Numbers of cycles at room temperature
>3000 complete cycles
Continuous charging current
Max. 12.5 A between 5 and 40°C, at higher and lower temperatures current is limited.
Battery efficiency
> 90%
Housing dimensions
175 x 229 x 67 cm
Weight
3.4 kg
Connection terminals
RAST 5/mini module 4 pin/communication
interface/external display
Recommended wire size
1.5 – 4 mm²
Ambient temp. (operation & warehousing)
-20 – 50 °C ambient temperature with
maximum battery life at 15 – 25 °C.
Warehousing temperature 10 – 30 °C.
Low and high temperature protection,
heating, charging & discharging
Temp. sensor prevents lithium battery charge under -5°C or above 55°C cell temp. Charging starts once cell temp. is higher than -5°C. Device has an integrated heating that is active between -20°C and 10°C cell temp. Discharge possible between -20°C and 60°C cell temp. At cell temp. below -20°C and over 60°C system is running in pure lead acid mode for higher battery lifetime.
Lithium cell balancing
Battery management inclusive balancer
Protection features
Overcurrent, overvoltage, short circuit, deep discharge, wrong polarity protection.
Operation mode/compatible
external batteries
Works in combination with any 12 V lead acid battery & lead acid charge controller.
Connection possibilities
Packs can be connected in parallel with each other (see exemplary parallel combination in the table below).
Max. parallel LE300s
In standard version, a maximum of 24
LE300 can be connected only in parallel, higher quantities possible after consulting BOS partner.
Parallel
Qt. of packs connected in parallel
6
2
Total nominal voltage
12.8 VDC
12.8 VDC
Total lithium capacity
168 Ah/2,15 kWh
56 Ah/ 716 Wh
Continuous charging/discharging current
Max. 75 A
Max. 25 A
Recommended lead acid capacity (not included)
Min 40 Ah
Min 20 Ah
