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Renogy 24V 100Ah Core LT

MPN RBT24100LFP-LT

Renogy

The Renogy 24V 100Ah Core LT is a battery pack with a nominal voltage of 25.6 V nominal, a rated capacity of 100 Ah at 0.5C, 25°C, Lithium iron phosphate, prismatic cells, dimensions of 20.55 × 9.45 × 8.62 inch, M8 × 1.25 × 15 mm bolts and a continuous discharge of 100 A.

Last updated: 21 September 2026

Battery and charging

Cells
Lithium iron phosphate, prismatic

“Battery Cell Type Lithium Iron Phosphate / Prismatic Cell”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Voltage
25.6 V nominal — a 24 V system in one case

“Nominal Voltage 25.6V”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Rated capacity
100 Ah at 0.5C, 25°C

“Rated Capacity (0.5C, 25°C) 100Ah”

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Rated charge cycles
5000 cycles at 80% depth of discharge

“Cycle Life (0.5C, 25°C) 5000 Cycles (80% DOD)”

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Maximum continuous discharge
100 A continuous

“Maximum Continuous Discharge Current 100A”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Peak discharge
300 A for 5 seconds

“Peak Discharge Current 300A@5s”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Series and parallel limit
Two in series at most, eight in parallel

“Connection Method Series & Parallel (2S8P)”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Highest charge current it will take
100 A

“Maximum Continuous Charge Current 100A”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Charging voltage
29.0 V

“Charge Voltage 29.0V”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Working voltage range
20.0 V to 29.2 V

“Voltage Range 20.0V to 29.2V”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Battery care and safety

Ingress protection
IP65

“Protection Rating IP65”

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Temperatures it may be charged in
−20 to 55 °C, with the heater running below 0 °C

“Charge Temperature Range -4°F to 131°F (-20°C to 55°C)”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Temperatures it may be run in
-20 to 60°C when running

“Discharge Temperature Range -4°F to 140°F (-20°C to 60°C)”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Temperatures it may be stored in
-25 to 65°C in storage

“Storage Temperature Range -13°F to 149°F (-25°C to 65°C)”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Heating built into the battery
A 200 W heater, on below 5°C and off above 10°C

“Equipped with a 200W self-heating function to ensure you can charge at low temperature.”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Temperatures the heater works between
On below 5°C, off above 10°C, warming about 30°C an hour

“The self-heating function will start at optimal performance once the battery and the battery temperature drops below 41°F (5°C) and stop operating automatically once the battery temperature rises above 50°F (10°C). The temperature rise rate is approximately 86°F (30°C) per hour when running at full power of 200W.”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

What the heater needs to run
The heater needs more than 10 A per battery to run

“The normal operation of the self-heating function requires a stable charge current greater than 10A for each battery in the parallel battery bank.”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Humidity it is rated for
10% to 95% relative humidity

“Operation Relative Humidity 10% to 95%”

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Size and fit

Overall dimensions
20.55 × 9.45 × 8.62 inch

“Dimension 20.55 x 9.45 x 8.62 in / 522 x 240 x 219 mm”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Torque for the battery terminal nuts
10 to 12 N·m

“Recommended Terminal Torque 88.5 inch·lbs to 106.2 inch·lbs / 10 N·m to 12 N·m”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Stated weight
45.2 lbs

“Weight 45.2 lbs. / 20.5 kg”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Terminal thread
M8 × 1.25 × 15 mm bolts

“Terminal Bolt Size M8 x 1.25 x 15 mm”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Group size the maker does not name
A BCI group is claimed but never named

“Battery is designed for the drop-in replacement of deep-cycle lead-acid batteries with its standard Battery Council International (BCI) group size.”

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Other findings

Cell overvoltage protection
3.70 V a cell, recovering at 3.55 V

“Battery Cell Overvoltage Protection Trigger Battery Cell Voltage ≥ 3.70V Recover Battery Cell Voltage ≤ 3.55V”

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Self heating activation temperature
Starts below 5 °C, stops above 10 °C

“The self-heating function will start at optimal performance once the battery and the battery temperature drops below 41°F (5°C) and stop operating automatically once the battery temperature rises above 50°F (10°C).”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Self heating charge current required
Needs more than 10 A of charge current per battery to run

“The normal operation of the self-heating function requires a stable charge current greater than 10A for each battery in the parallel battery bank.”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

Self heating power and rate
200 W, warming about 30 °C an hour

“The temperature rise rate is approximately 86°F (30°C) per hour when running at full power of 200W.”

Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

State of charge by resting voltage
27.2 V full, 20.0 V empty, rested half an hour

“SOC Open Circuit Voltage 100% 27.2V 30% 25.8V”

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Certification claims

Standards the maker claims
Six named — RCM, IC and RoHS are absent here

“Certification MSDS, UN38.3, FCC, CE, PSE, and UKCA”

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Devices documented to run on this

The figures below line up. Neither manufacturer states that this pack runs this device — that is our reading of what each of them published separately, not a claim by either of them or a test by us. Even where every stated figure agrees, these can still decide it:

  • The device’s published draw is usually a peak, not the load it holds — the two numbers are not the same kind of quantity
  • A maker’s amp-hour minimum and their reserve-capacity minimum can give different answers about the same battery
  • Conditions attached to the chemistry, such as a speed limit for running on lithium
  • Whether the pack may be wired in series at all, where the device needs 24 or 36 volts
  • The charger, which both makers put conditions on and neither supplies
  • Case size, hold-down and terminal type — fitting the space is not being secured in it

Worth confirming with the device's manufacturer or a dealer before buying.

One of these, on its own, at 24 V.

Sources

  • Renogy Core LT Series 25.6V 100Ah Deep Cycle Lithium Iron Phosphate Battery — User ManualManufacturer document

    Renogy

    Source: cdn.shopify.com/s/files/1/0631/0137/0483/files/25.6V_20100Ah_20Core_20LT_20Series_20Battery_20Manual_ce6670d1-c5a8-46c6-8e25-9a6baba26c8c.pdf

    Retrieved September 11, 2026